Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun knockout

2 senses of knockout

Sense 1
smasher, stunner, knockout, beauty, ravisher, sweetheart, peach, lulu, looker, mantrap, dish -- (a very attractive or seductive looking woman)
       => woman, adult female -- (an adult female person (as opposed to a man); "the woman kept house while the man hunted")

Sense 2
knockout, KO, kayo -- (a blow that renders the opponent unconscious)
       => blow -- (a powerful stroke with the fist or a weapon; "a blow on the head")

Antonyms of adj knockout

1 sense of knockout

Sense 1
hard, knockout, severe -- (very strong or vigorous; "strong winds"; "a hard left to the chin"; "a knockout punch"; "a severe blow")

INDIRECT (VIA strong) -> weak -- (wanting in physical strength; "a weak pillar")

Similarity of adj knockout

1 sense of knockout

Sense 1
hard, knockout, severe -- (very strong or vigorous; "strong winds"; "a hard left to the chin"; "a knockout punch"; "a severe blow")
       => strong (vs. weak) -- (having strength or power greater than average or expected; "a strong radio signal"; "strong medicine"; "a strong man")