un·wary /ˌʌnˈwæri, ˈwɛr-/
 (a.)不注意的,不留心的,疏忽的


 Un·wa·ry a.
 1. Not vigilant against danger; not wary or cautious; unguarded; precipitate; heedless; careless.
 2. Unexpected; unforeseen; unware. [Obs.]

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 unwary
      adj : not alert to danger or deception; "the shrieks of unwary
            animals taken by surprise"; "some thieves prey
            especially on unwary travelers"; "seduce the unwary
            reader into easy acquiescence"- O.J.Campbell [ant: wary]