wit·less /ˈwɪtləs/
  (a.)無智的;輕率的;笨的
  Wit·less a. Destitute of wit or understanding; wanting thought; hence, indiscreet; not under the guidance of judgment.  “Witless bravery.”
     A witty mother! witless else her son.   --Shak.
     Witless pity breedeth fruitless love.   --Fairfax.
  -- Wit*less*ly, adv. -- Wit*less*ness, n.
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  witless
       adj : (of especially persons) lacking sense or understanding or
             judgment [syn: nitwitted, senseless, soft-witted]