un·fit /-ˈfɪt/
  (a.)不適當的,不勝任的,不健全的(vt.)使不相宜,使不合格
  Un·fit v. t.  To make unsuitable or incompetent; to deprive of the strength, skill, or proper qualities for anything; to disable; to incapacitate; to disqualify; as, sickness unfits a man for labor; sin unfits us for the society of holy beings.
  Un·fit, a.  Not fit; unsuitable. -- Un*fit*ly, adv. -- Un*fit*ness, n.
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  unfit
       adj 1: below the required standards for a purpose; "an unfit
              parent"; "unfit for human consumption" [ant: fit]
       2: 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" [ant: fit]
       3: physically unsound or diseased; "has a bad back"; "a bad
          heart"; "bad teeth"; "an unsound limb"; "unsound teeth"
          [syn: bad, unsound]
       v : make unfit or unsuitable; "Your income disqualifies you"
           [syn: disqualify, indispose] [ant: qualify]
       [also: unfitting, unfitted]