Ehuẹun has a rather reduced system, compared to proto-Edoid, of seven vowels; these form two harmonic sets, /i e a o u/ and /i ɛ a ɔ u/.[1]
The language arguably has no phonemic nasal stops; [m, n] alternate with [β, l], depending on whether the following vowel is oral or nasal. The inventory is:[2]
| Bilabial | Labiodental | Alveolar | Palatal | Velar | Labio-velar | Glottal | |
|---|---|---|---|---|---|---|---|
| Plosive | b | t d | k ɡ | k͡p ɡ͡b | |||
| Fricative | ɸ β [m] | f v | s z | h | |||
| Nasal | m | n | ŋ | ||||
| Rhotic | r̝ r | ||||||
| Approximant | ʋ | l | j | ɰ | w |
The two rhotics have been described as voiced and voiceless trills. However, Ladefoged found both to be approximants, with the pair being |raised (without being fricatives) but not trills.