Definition for IN-SID'I-OUS

IN-SID'I-OUS, a. [L. insidiosus, from insideo, to lie in wait; in and sedeo, to sit.]

  1. Properly, lying in wait; hence, watching an opportunity to insnare or entrap; deceitful; sly; treacherous; used of persons.
  2. Intended to entrap; as, insidious arts.

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