Phonology
Ido has seven vowels composing five vowel phonemes. The vowels /e/ and /ɛ/ are interchangeable depending on speaker preference, as are /o/ and /ɔ/. The combinations /au/ and /eu/ become diphthongs in word roots but not when adding affixes.
Front | Back | |
---|---|---|
Close | i | u |
Mid | e, ɛ | o, ɔ |
Open | a |
Bilabial | Labio- dental |
Alveolar | Post- alveolar |
Palatal | Velar | Glottal | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Nasal | m | n | ||||||||||||
Plosive | p | b | t | d | k | ɡ | ||||||||
Affricate | t͡s | t͡ʃ | ||||||||||||
Fricative | f | v | s | z | ʃ | ʒ | h | |||||||
Tap | ɾ | |||||||||||||
Approximant | l | j | w |
All polysyllable words are stressed on the second-to-last syllable except for verb infinitives, which are stressed on the last syllable – skolo, kafeo and lernas for "school", "coffee" and the present tense of "to learn", but irar, savar and drinkar for "to go", "to know" and "to drink". If an i or u precedes another vowel, the pair is considered part of the same syllable when applying the accent rule – thus radio, familio and manuo for "radio", "family" and "hand", unless the two vowels are the only ones in the word, in which case the "i" or "u" is stressed: dio, frua for "day" and "early".
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