in·ep·ti·tude /(ˌ)ɪˈnɛptəˌtud, ˌtjud/
  不適當,愚笨,愚昧的言行
  In·ept·i·tude n.
  1. The quality of being inept; unfitness; inaptitude; unsuitableness.
     That ineptitude for society, which is frequently the fault of us scholars.   --Tatler.
  2. Absurdity; nonsense; foolishness.
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  ineptitude
       n : unskillfulness resulting from a lack of training [syn: awkwardness,
            clumsiness, ineptness, maladroitness, slowness]