Breton pronunciation additions: standard KLT
Prepared 23 October 2026 for the online Cymraeg.ru dictionary.

Main source: Office public de la langue bretonne / Ofis publik ar brezhoneg,
Portail numerique de la langue bretonne. The public phonetizer combines a
phonetic dictionary, pronunciation rules and mutation rules. Each input word
was isolated with a sentence boundary; the echoed spelling, word boundary,
transcription and dictionary/rule label were checked and cached.
https://niverel.brezhoneg.bzh/fr/ostilhou/phonetizer/
https://niverel.brezhoneg.bzh/fr/ostilhou/syllabifier/

For regular rule predictions, phonetic syllables were matched segment by
segment, KLT word stress was supplied, and vowel quantity was checked against
documented KLT spelling and stress rules. Word-final citation devoicing and
regressive obstruent voicing were also checked.
Dictionary exceptions retain their source stress. Suspected omissions, unknown
notation, ambiguous compounds, malformed spellings and entries explicitly
marked Vannetais were deferred. Original pronunciations were preserved apart
from individually reviewed typographical corrections. IPA is stored without
enclosing slashes or brackets; the website supplies the display brackets.

Additional lexical source: Breton Pronunciation Dictionary, Preben Vangberg,
including contributions originally gathered from Wikeriadur (Breton Wiktionary).
https://gitlab.com/prvInSpace/breton-pronunciation-dictionary
Revision f9194e99a5e3708845a85473fa931055c91972e9
https://br.wiktionary.org/
Adaptations: notation normalization, exclusions for truncated or wrong-word
readings, reviewed glyph corrections, and citation-form IPA without wrappers.

Phonological references:
Hewitt, Treger Breton, Journal of the International Phonetic Association.
https://doi.org/10.1017/S0025100300001766
Kennard, Variation in Breton word stress: new speakers and the influence of French.
https://doi.org/10.1017/S0952675721000245
CNRS Arbres, Accentuation.
https://arbres.iker.cnrs.fr/index.php?title=Accentuation
Mervent, stressed vowel quantity and final consonants:
https://www.mervent.bzh/regle-2-longueur-de-la-voyelle-dans-la-syllabe-accentuee
https://www.mervent.bzh/regle-3-la-consonne-finale
Iosad, Mutations and postlexical phonology in Breton:
https://www.pure.ed.ac.uk/ws/files/14472136/IOSAD_Too_Many_Levels_Too_Few_Solutions.pdf

Automatically generated rare-word pronunciations are not all individually
attested or native-speaker-verified. This update concerns the online dictionary;
historical static text exports are separate snapshots.

Open Breton Pronunciation Dictionary licence:
MIT License

Copyright (c) 2022 Preben Vangberg

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