Answer: unfits

AnswerCrossword Clue
UNFITSIncapacitates.
unfitsto make unfit disable disqualify
unfitsto render unfit or unsuitable; disqualify
unfitsnot fit; not adapted or suited; unsuitable
unfitsUNFIT, to make unsuitable
unfitsnot physically fit or in due condition
unfitsunqualified or incompetent