Learn Limbu (Yakthung)

Limbu — autonym Yakthung, language Yakthungpan — is a Kiranti (Sino-Tibetan) language of eastern Nepal and Sikkim, ~410,000 speakers, written in its own Sirijanga script and in Devanagari. This is a starting guide: where to learn, how the language is built, and what to expect (its verb is the famous hard part).

Honest note: the single hardest thing in Limbu is the verb — it agrees with both subject and object (44 transitive forms), with an inclusive/exclusive "we" and a dual number. Learn the script and pronouns first; meet the verb gradually. The reference grammar has the full paradigms.

Learning Materials and Language Technology for Limbu (Yakthung)

Survey of existing learning resources, pedagogy, technology, and reference facts for Limbu / Yakthungpan, compiled to seed a "Learn Limbu" guide. Every claim is cited with a source URL. Honest about what exists vs. what does not.

Companion in-repo references already written for this project: docs/limbu-reference-grammar.md (corpus-reconstructed reference grammar, sections: orthography → pronouns → nouns/number → case → verb → biactantial agreement) and docs/limbu-revival-grammar-sketch.md. Those are the internal grammar; this file is the externally-sourced learning-materials landscape.

0. Reliable reference facts (cite before teaching)

Verb-system facts a learner must be warned about up front (this is the hard part of the language):

• Eleven pronominal categories: 1/2/3 person × singular/dual/plural, with an inclusive/exclusive distinction in 1st dual and 1st plural. ANU repository: A new analysis of the Limbu verb (van Driem)
• Transitive verbs agree with both agent and patient; the transitive paradigm distinguishes 44 forms. ANU repository: van Driem
• Double negation and object agreement, but no third-person subject agreement. Wikipedia: Limbu language

1. Existing learning materials

1.1 Printed primers and textbooks

• "Yakthung Pan Hu Asi" ("Learn Yakthung Pan / Limbu language"), published by Kirat Yakthung Chumlung (KYC) — the most frequently named beginner primer for self-study in Nepal. Sirjana blog: How to learn Limbu; Kirat Yakthung Chumlung — Wikipedia
• KYC literacy programme — KYC (founded 1989) runs a Limbu mother-tongue literacy programme and trains the younger generation in language and culture; it is the principal producer of graded Nepal-side teaching materials. Kirat Yakthung Chumlung — Wikipedia; chumlung.org.np; paper: Learning in our own language: KYC develop a Limbu literacy programme in Nepal (Academia.edu page exists; full text gated 403 at fetch time — title and provenance verified via search)
• Sikkim school textbooks — B.B. Muringla (Padma Shri) spent ~30 years developing Sikkim-government Limbu textbooks from primary through college, the first bilingual Nepali-Limbu primers dating to 1951; he also produced dictionaries (Limbu-Nepali-English, Hindi-Limbu) and graded readers. Sikkim Project: Reviving Limbu language and culture
• CBSE prescribed school readers (Sikkim curriculum): Patila Sapsok (prose), Sammila Sapsok (poetry), Khedasung (rapid reader), Sodhungembahare Siwading Khahunha, and the grammar text Thangsing Yakthung Huppan Nu Itchap. CBSE Limboo Class IX syllabus 2024-25 (PDF)

1.2 Dictionaries (print, foundational)

The lexicographic record is the strongest part of the Limbu resource base. Key works (full bibliography in docs/research-bibliography.md):

• Chemjong, I.S. — Limbu-Nepali-Angreji Sabdakos (Limbu-Nepali-English), Nepal Academy, 3rd ed. 2010 ed. Bairagi Kainla. The most comprehensive multidialectal dictionary; entries in Srijanga, Devanagari, and roman. Scanned copy: Internet Archive
• Michailovsky, Boyd — Limbu-English Dictionary of the Mewa Khola Dialect (2002, ~2,500 entries, includes grammatical affixes); hypertext version on Pangloss. Pangloss Collection: Limbu
• Weidert & Subba — Concise Limbu Grammar and Dictionary (1985, Panthare dialect). Listed in docs/research-bibliography.md.

1.3 Online courses, YouTube, social

• Online Limboo Tutorial (YouTube, Gangtok, Sikkim) — teacher Sancha Bir Subba; free Basic / Intermediate / Advance courses with grammar, speaking, and downloadable materials. The single most complete free video course found. YouTube channel; Facebook page
• "Count 1 to 100 in Limbu" — YouTube numeral lesson. YouTube
• "Yakthung/Limbu language learning for beginners" — Facebook video series (e.g. Day 1, Day 5 "simple past tense"). Facebook video series
• Sirjana blog ("Yakthung Paan Hu Asi") — a numbered self-study blog series by a learner: Lesson 1 = Alphabet/script, next = Kinship terms, etc. Useful as a model sequence, light on detail. Lesson 1 (Alphabet); Learn-Limbu tag index
• Native Nepali Stage — overview article on Limbu language and the Sirijunga script (orientation, not a course). nepalnative.com

Honesty note: A site previously advertised as kurumbang.com/learn-limbu is now a dead/expired domain (Hostinger expiry placeholder at fetch time) — do not cite it as a live resource. kurumbang.com/learn-limbu

1.4 Apps

• Limbu Dictionary (Limbu-English-Nepali), Android. Google Play
• Yakthung Sirijanga Keyboard, Android — Unicode Sirijanga input. Google Play
• Sirijunga Keyboard (by Kuldip Sanyak Limbu), Android — three layouts. Softonic listing; soft112 listing

Honesty note: No dedicated, full-curriculum "Learn Limbu" app (Duolingo-style spaced-repetition course) was found. The author of the Sirjana blog explicitly noted the absence of such an app and only an intention to build one. Sirjana blog

1.5 Alphabet charts, phrase lists, numerals

• Omniglot — Limbu alphabet: abugida overview, inherent vowel /ɔ/, vowel carrier ᤀ, Sirijanga + Devanagari charts, sample text with transliteration. Lacks a labelled phonetic consonant chart and a numerals table. omniglot.com/writing/limbu.htm
• Omniglot — Limbu numbers: actual numerals 1–10 (script + roman) with teens/tens to 100. omniglot.com/language/numbers/limbu.htm
  • 1 thik (ᤌᤡᤰ) · 2 netchi (ᤏᤧᤳᤇᤡ) · 3 sumsi (ᤛᤢᤶᤛᤡ) · 4 lisi (ᤗᤡᤛᤡ) · 5 ngasi (ᤅᤠᤛᤡ) · 6 tuksi (ᤋᤢᤰᤛᤡ) · 7 nusi (ᤏᤢᤛᤡ) · 8 yetchi (ᤕᤧᤳᤇᤡ) · 9 pāngsi (ᤑᤠᤱᤛᤡ) · 10 thibong (ᤌᤡᤒᤥᤅ᤻).
• Yakthung Kirati blog — "Limbu Words & Meanings": a community English/Nepali glossed wordlist. yakthungkirati.blogspot.com

1.6 Sirijanga-script learning resources specifically

• Omniglot Limbu page (above) — best single chart for orientation.
• r12a / W3C "Limbu orthography notes" (Richard Ishida) — the most thorough technical script reference: consonants (25 basic + obsolete), inherent vowel ɔ, 3 medial (subjoined) marks, final-consonant combining marks, special signs, digits, no conjuncts, NFC/NFD normalization guidance; plus a companion character-picker app and term lister. Aimed at developers/serious learners. r12a.github.io/scripts/limb/lif.html; Limbu term lister
• Wikipedia: Limbu script — history (Te-ongsi Sirijunga Xin Thebe, 18th c.), inventory, special marks, Unicode block. en.wikipedia.org/wiki/Limbu_script
• ScriptSource — Limbu (Limb) — registry-level metadata. scriptsource.org/scr/Limb

2. How the language is structured for learners (pedagogical sequence)

2.1 The natural sequence (consensus across sources)

Both the community blog series and the formal curricula converge on the same order, which is also the order of this project's docs/limbu-reference-grammar.md:

1. Script (Sirijanga abugida + Devanagari) — inherent vowel /ɔ/, vowel carrier, dependent vowel signs, final-consonant marks, special signs. omniglot.com/writing/limbu.htm; r12a.github.io
2. Pronunciation — phoneme inventory, vowel length (kemphreng/mukphreng), glottalization. Wikipedia: Limbu script
3. Pronouns — the 11-way person/number system including the inclusive/exclusive split, taught early because everything downstream (possession prefixes, verb agreement) keys off it. van Driem (ANU repo)
4. Basic nouns + case — number (sg/dual/pl), prefixal possession, case and postpositions. (Maps to docs/limbu-reference-grammar.md §3–4.)
5. Simple verbs — intransitive stems, simple present/past. The Facebook beginner series reaches "simple past tense" by Day 5. Facebook series
6. The agreement system — biactantial (agent+patient) agreement, ~44 transitive forms, negation. This is the capstone, deferred to intermediate/advanced. van Driem (ANU repo); van Driem 1987 A Grammar of Limbu (see docs/research-bibliography.md); full text mirror: dokumen.pub

2.2 Existing graded curricula (this is the real find)

CBSE Limboo (Sikkim), Classes IX–XI — a genuine, official graded curriculum (CBSE Class IX 2024-25 PDF; subject code 025 for IX–X, 125 for XI):

• Four sections with mark weights (Class IX, 80 external): Reading 15, Writing 15, Grammar 20, Literature 30 (95 periods total).
• Grammar syllabus (textbook Thangsing Yakthung Huppan Nu Itchap), in order:
  1. Ming, Pungwan and noun classification / sentence-formation rules (Sutlain Maychu Chokma Thhim)
  2. Palla
  3. Sok Nu Sembay
  4. Minglek
  5. Thhikpayyok Sutla (simple sentence)
  6. Ekpay Sutla
  7. Yokpayba Sutla
  8. Iklenglay Kugo
• Writing: essay, letter writing, and English→Limboo translation.
• Literature: prose (Patila Sapsok), poetry (Sammila Sapsok), rapid reader (Khedasung), and a culture/history reader.
• Stated learning objectives: develop the four skills (listening, speaking, reading, writing); apply correct grammatical structure. Background notes that formal Limbu teaching in Sikkim began 1968, now goes to PhD at Sikkim University (since 2021). All from CBSE Class IX 2024-25 PDF.
• Year-on-year CBSE versions confirm continuity: 2023-24, Class IX–X 2021-22, Class XI 2024-25, Class IX-X 2026-27.

On the Nepal side, the KYC literacy programme is the parallel graded mother-tongue curriculum, but its syllabus is less openly documented online than CBSE's. KYC — Wikipedia; academia.edu paper

3. Existing Limbu language technology

3.1 Scripts, fonts, keyboards

• Unicode: Limbu block U+1900–U+194F, added April 2003 (Unicode 4.0); digits at U+1946–U+194F. Wikipedia: Limbu script
• Namdhinggo (SIL) — the reference Unicode Sirijanga font; full Limbu block + basic Latin; 5 weights (Regular→ExtraBold) + WOFF/WOFF2; SIL Open Font License; free; v3.100 (Dec 2023). software.sil.org/namdhinggo
• Dotted Limbu font (Sancha Bir Subba) — teaching font for tracing letterforms. sanchabirsubba.com
• Keyboards: Yakthung Sirijanga Keyboard (Android), Sirijunga Keyboard (Android, 3 layouts), Windows Limbu Unicode keyboard layouts. Yakthung Sirijanga (Play); Sirijunga Keyboard (Softonic); Windows layout guide (etlogs)
• Script converters: Aksharamukha (Limbu transliteration to/from other scripts) and a Roman→Sirijanga converter. Aksharamukha — Limbu; Nepali Translator Sirijanga converter

3.2 Online dictionaries

• Pangloss Collection (CNRS) — Michailovsky's hypertext Mewa-Khola Limbu-English dictionary plus an archived spoken text/audio corpus with transcriptions and translations (a key spoken resource; fetch returned 403 but the collection is publicly listed). pangloss.cnrs.fr/corpus/Limbu
• Glosbe — free Limbu↔︎English / Nepali↔︎Limbu with example sentences and computer-read audio (no entry count published). glosbe.com/lif/en; glosbe.com/ne/lif
• ETlogs Online Limbu Dictionary — community crowd-editable dictionary. etlogs.com online dictionary
• Internet Archive — scanned Chemjong Limbu-Nepali-English dictionary. archive.org

3.3 NLP / MT / TTS / ASR / corpora

• EN→Limbu MT (T5-Small) by Bedram Tamang — fine-tuned on a custom limbu-english.json of ~1,500 EN-Limbu pairs; model published as bedus-creation/eng-limbu-t5-001 on Hugging Face. Dataset/code not confirmed openly released. DEV.to writeup
• Tokenization & stemming of Limbu — rule-based morphological tokenizer/stemmer, ACM TALLIP (Transactions on Asian and Low-Resource Language Information Processing). First step toward Limbu NLP under resource scarcity. dl.acm.org/doi/10.1145/3712018
• Wiktionary (lif) — only ~120 lemma entries (12 subcategories) at survey time, plus a Limbu numerals category — i.e. coverage is thin. Category:Limbu language; Category:Limbu numerals
• Linguistic Survey of India (CLLD) — Limbu comparative wordlist. lsi.clld.org/languages/LIMBU
• AI4Bharat IndicNLP catalog — broader Indic NLP resource index (Limbu not yet a first-class member; useful for tooling). github.com/AI4Bharat/indicnlp_catalog

Honesty note — what does NOT exist (as of this survey, June 2026): no public Limbu TTS or ASR model/corpus was found in the wild; no large parallel MT corpus (the only MT effort is ~1,500 pairs); Wiktionary coverage is ~120 lemmas; no Duolingo-class app. This repository's own limbu-speech-toolkit (G2P + Piper/Piper+ TTS recipes + LIFWBT-derived dictionary) is therefore among the first dedicated Limbu speech-tech efforts — see README.md and docs/tts-training-recipes.md.

4. Recommended outline for a beginner→intermediate "Learn Limbu" guide

Designed to match the consensus sequence (§2) and reuse this repo's grammar docs. Bracketed tags show the best existing source to build each unit from.

Part A — Orientation (Beginner)

1. Who speaks Yakthungpan, where, which dialect to target (default: Panthare standard, note Phedappe wide intelligibility). [Wikipedia: Limbu language]
2. The two scripts and why both matter (Sirijanga for identity/print, Devanagari for cross-learning with Nepali).

Part B — The Sirijanga script (Beginner) 3. Abugida logic: inherent vowel /ɔ/, the vowel carrier ᤀ. [Omniglot, r12a] 4. Consonant letters; dependent vowel signs. [r12a, Wikipedia: Limbu script] 5. Final-consonant marks and special signs (kemphreng, mukphreng, length). [Wikipedia: Limbu script, r12a] 6. Limbu digits 0–9 and writing numbers. [Omniglot numbers, Wikipedia] 7. Typing: install Namdhinggo + a Sirijanga keyboard. [SIL, Play Store]

Part C — Pronunciation (Beginner) 8. Phoneme inventory, vowel length, glottalization; tie spelling↔︎sound to the repo G2P (limbu-g2p). [Wikipedia: Limbu script; repo README]

Part D — Core grammar (Beginner→Intermediate) 9. Pronouns first: the 11-way system, inclusive vs. exclusive. [van Driem; repo limbu-reference-grammar.md §2] 10. Nouns: number (sg/dual/pl); prefixal possession. [repo §3, §4.3] 11. Case and postpositions. [repo §4] 12. Simple intransitive verbs; present and past. [Facebook Day-5 model; repo §5.4]

Part E — The agreement system (Intermediate) 13. Subject agreement paradigm. [repo §5.6] 14. Biactantial (agent×object) agreement, the 44-form transitive table, portmanteau suffixes. [van Driem; repo §5.7] 15. Negation (double-negator, voicing sandhi). [repo §5.3; revival sketch]

Part F — Use and practice 16. Common phrases, kinship terms, numerals drills. [Sirjana blog, Yakthung Kirati blog, Omniglot] 17. Graded reading: align to CBSE Patila/Sammila/Khedasung readers; KYC Yakthung Pan Hu Asi. [CBSE PDF; Sirjana blog] 18. Listening: Online Limboo Tutorial videos; Pangloss audio corpus; All India Radio Gangtok daily Limbu broadcast. [YouTube; Pangloss; CBSE PDF] 19. Tools: Glosbe / Pangloss dictionaries, Limbu Dictionary app, Aksharamukha converter. [Glosbe; Pangloss; Play Store; Aksharamukha]

Suggested first-100-words seed: numerals 1–10 (§1.5), kinship terms (Sirjana lesson 2), pronouns (set of 11), and high-frequency verbs from the repo corpus paradigms (docs/limbu-reference-grammar.md §5.4).

Sources

• https://en.wikipedia.org/wiki/Limbu_language
• https://en.wikipedia.org/wiki/Limbu_script
• https://en.wikipedia.org/wiki/ISO_639:lif
• https://en.wikipedia.org/wiki/Kirat_Yakthung_Chumlung
• https://en.wiktionary.org/wiki/lif
• https://en.wiktionary.org/wiki/Category:Limbu_language
• https://en.wiktionary.org/wiki/Category:Limbu_numerals
• https://grokipedia.com/page/laimbue_language
• https://www.thefreelibrary.com/Classification+of+Chhatthare+Limbu-a0183984495
• https://sikkimproject.org/reviving-limbu-language-and-culture/
• https://openresearch-repository.anu.edu.au/server/api/core/bitstreams/c9445513-d057-4424-ac32-9a8af687aea5/content
• https://dokumen.pub/a-grammar-of-limbu-3110112825-0899253458.html
• https://sirjana.wordpress.com/2016/05/08/how-to-learn-limbu-language/
• https://sirjana.wordpress.com/2015/07/08/yakthung-paan-hu-asi-learn-limbu-language-1/
• https://sirjana.wordpress.com/tag/learn-limbu/
• https://www.chumlung.org.np/article-b2dWjw==
• https://www.academia.edu/1801919/Learning_in_our_own_language_Kirat_Yakthung_Chumlung_develop_a_Limbu_literacy_programme_in_Nepal
• https://www.youtube.com/c/OnlineLimbooTutorial
• https://www.facebook.com/onlinelimbootutorial/
• https://www.youtube.com/watch?v=rGObMrVVIu0
• https://www.facebook.com/61564177139537/videos/limbu-language-learning-for-beginners/1995893380887428/
• https://nepalnative.com/language/the-essence-of-limbu-language-and-sirijunga-script/
• https://kurumbang.com/learn-limbu
• https://play.google.com/store/apps/details?id=com.jettyland.limbudictionary
• https://play.google.com/store/apps/details?id=com.yakthung.sirijanga
• https://sirijunga-keyboard.en.softonic.com/android
• https://sirijunga-keyboard.soft112.com/
• https://www.omniglot.com/writing/limbu.htm
• https://www.omniglot.com/language/numbers/limbu.htm
• https://yakthungkirati.blogspot.com/2012/09/limbu-words-meanings.html
• https://r12a.github.io/scripts/limb/lif.html
• https://r12a.github.io/scripts/limb/lif_vocab.html
• https://www.scriptsource.org/scr/Limb
• https://cbseacademic.nic.in/web_material/CurriculumMain25/Sec/Limboo_Sec_2024-25.pdf
• https://www.cbseacademic.nic.in/web_material/CurriculumMain24/Sec/Limboo_Sec_2023-24.pdf
• https://cbseacademic.nic.in/web_material/CurriculumMain22/Sec/Limboo_Sec_2021-22.pdf
• https://cbseacademic.nic.in/web_material/CurriculumMain25/SrSec/Limboo_SrSec_2024-25.pdf
• https://cbseacademic.nic.in/web_material/CurriculumMain27/SecPart1/Limboo_SecP1_2026-27.pdf
• https://software.sil.org/namdhinggo/
• https://sanchabirsubba.com/product/dotted-limbu-font/
• https://www.etlogs.com/2021/06/limbu-keyboard-limbu-india-keyboard-for.html
• https://www.aksharamukha.com/describe/Limbu
• https://nepalitranslator.com/sirijang-alipi/
• https://pangloss.cnrs.fr/corpus/Limbu?lang=en
• https://glosbe.com/lif/en
• https://glosbe.com/ne/lif
• https://www.etlogs.com/p/online-limbu-dictionary.html
• https://archive.org/details/limbunepaliangre00cemj
• https://dev.to/bedram-tamang/fine-tuning-t5-small-model-for-a-completely-new-language-limbu-4c4n
• https://dl.acm.org/doi/10.1145/3712018
• https://lsi.clld.org/languages/LIMBU
• https://github.com/AI4Bharat/indicnlp_catalog