unfit(redirected from unfits)
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1. Not in good physical or mental health.
2. Biology Unable to survive or produce viable offspring in a particular environment.
tr.v. un·fitted, un·fitting, un·fits
To cause to be unsuited or unqualified: "Having run for president ... often unfits a man for lesser or more useful subsequent work" (Garry Wills).
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.