Antonyms of adj unfermented

1 sense of unfermented

Sense 1
fresh, sweet, unfermented -- (not soured or preserved; "sweet milk")

INDIRECT (VIA unsoured) -> soured -- (having turned bad)

Similarity of adj unfermented

1 sense of unfermented

Sense 1
fresh, sweet, unfermented -- (not soured or preserved; "sweet milk")
       => unsoured (vs. soured) -- (not having turned bad)