beware

beware
    v 1: be on one's guard; be cautious or wary about; be alert to;
         "Beware of telephone salesmen" [syn: {beware}, {mind}]
    

Beware \Be*ware"\, v. i. [Be, imperative of verb to be + ware.
   See {Ware}, {Wary}.]
   1. To be on one's guard; to be cautious; to take care; --
      commonly followed by of or lest before the thing that is
      to be avoided.
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            Beware of all, but most beware of man ! --Pope.
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            Beware the awful avalanche.           --Longfellow.
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   2. To have a special regard; to heed. [Obs.]
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            Behold, I send an Angel before thee. . . . Beware of
            him, and obey his voice.              --Ex. xxiii.
                                                  20, 21.
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   Note: This word is a compound from be and the Old English
         ware, now wary, which is an adjective. "Be ye war of
         false prophetis." --Wyclif, Matt. vii. 15. It is used
         commonly in the imperative and infinitive modes, and
         with such auxiliaries (shall, should, must, etc.) as go
         with the infinitive.
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Beware \Be*ware"\ (b[-e]*w[^a]r"), v. t.
   To avoid; to take care of; to have a care for. [Obs.]
   "Priest, beware your beard." --Shak.
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         To wish them beware the son.             --Milton.
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