say it: uhn-FIT
unfit is an adjective and verb meaning "below the required standards for a purpose". It carries 4 recorded senses.
below the required standards for a purpose
“an unfit parent”
“unfit for human consumption”
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”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for unfit come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.