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English


The English language support uses a vowel system based on John Wells’ Lexical Sets[1]. These were created by Wells in 1982 by comparing the Received Pronunciation British (RP) and General American (GenAm) accents in use at that time.

Short Vowels

Lexical Set RP GenAm
KIT ɪ ɪ
DRESS e ɛ
TRAP æ æ
LOT ɒ ɑ
STRUT ʌ ʌ
FOOT ʊ ʊ

Long Vowels

Lexical Set RP GenAm
FLEECE i
PALM ɑː ɑ
THOUGHT ɔː ɔ
GOOSE u

Rhotic Vowels

These are vowels that are followed by an r that is not part of the next syllable when considering the root form of the word containing that vowel.

Lexical Set RP GenAm
NURSE ɜː ɝ
START ɑː ɑɹ
NORTH ɔː ɔɹ
FORCE ɔː
CURE ʊə̯ ʊɹ
NEAR ɪə̯ ɪɹ
SQUARE eə̯ ɛɹ

Reduced Vowels

These are unstressed vowels that differ from the vowels in the main lexical sets.

Lexical Set RP GenAm
HAPPY ɪ i
COMMA ə ə
LETTER ə ɚ

Diphthongs

Lexical Set RP GenAm
FACE eɪ̯ eɪ̯
PRICE aɪ̯ aɪ̯
CHOICE ɔɪ̯ ɔɪ̯
GOAT əʊ̯ oʊ̯
MOUTH aʊ̯ aʊ̯

Split Vowels

These are lexical sets defined by John Wells that are merged with other lexical sets in both RP and GenAm, so have split from one of those lexical sets and merged with the other.

Lexical Set RP GenAm
BATH ɑː æ
CLOTH ɒ ɔ

References

  1. Wikipedia. Lexical set. 2017. Creative Commons Attribution-Sharealike 3.0 Unported License (CC-BY-SA).