Antonyms of adj knock-kneed

1 sense of knock-kneed

Sense 1
knock-kneed -- (having the knees abnormally close together and the ankles wide apart)

INDIRECT (VIA unfit) -> fit -- (physically and mentally sound or healthy; "felt relaxed and fit after their holiday"; "keeps fit with diet and exercise")

Similarity of adj knock-kneed

1 sense of knock-kneed

Sense 1
knock-kneed -- (having the knees abnormally close together and the ankles wide apart)
       => unfit (vs. fit) -- (not in good physical or mental condition; out of condition; "fat and very unfit"; "certified as unfit for army service"; "drunk and unfit for service")