Breathings

Consonants

Vowels

Note on υ: Upsilon was earlier a close back rounded vowel [u] (= oo), and it retained this value in forming the diphthongs αυ, ευ, ηυ. In classical Attic, the sound [u] was conveyed by ου.

Note on υι: The full pronunciation of the diphthong was [ÿj] or [ÿjj], but in classical Attic the semivocalic iota was weakened to a glide between vowels and sometimes omitted in spelling (as in ὑός for υἱός).