It is said that Y is "sometimes" a vowel, because the letter Y represents both vowel and consonant sounds. In the words "cry", "sky", "fly", "my" and "why", letter Y represents the vowel sound /aɪ/. In words like "myth" and "synchronize", Y represents the vowel sound /ɪ/. In words like "only", "quickly", and "folly", Y represents the vowel sound /i/.