Antonyms of adj swaybacked

1 sense of swaybacked

Sense 1
dipped, lordotic, swayback, swaybacked -- (having abnormal sagging of the spine (especially in horses))

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 swaybacked

1 sense of swaybacked

Sense 1
dipped, lordotic, swayback, swaybacked -- (having abnormal sagging of the spine (especially in horses))
       => 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")