Synonyms of the word 
KNOCK-KNEED → UNFIT
knock-kneed
- adj. (of the legs) having the knees abnormally close together, and the ankles spread apart.
- adj. (of a person or animal) suffering from genu valgum (or tibia valga).
unfit
- adj. Not fit; not having the correct requirements.
- adj. Not fit, not having a good physical demeanor.
- v. To make unfit; to render unsuitable, spoil, disqualify.
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