unfit

(verb) make unfit or unsuitable. Synonyms: disqualify, indispose. Example: "Your income disqualifies you."

(adj) below the required standards for a purpose. Synonyms: unfit (vs. fit). Examples: "An unfit parent." "Unfit for human consumption."

(adj) not in good physical or mental condition; out of condition. Synonyms: unfit (vs. fit). Examples: "Fat and very unfit." "Certified as unfit for army service." "Drunk and unfit for service."

(adj) physically unsound or diseased. Synonyms: bad, unsound. Examples: "Has a bad back." "A bad heart." "Bad teeth." "An unsound limb." "Unsound teeth."