The Oxford Thesaurus An A-Z Dictionary of Synonyms - darev.

1) challenge, defy, provoke; throw down the gauntlet: She dared me to jump, so I jumped. 2) risk, hazard, gamble, venture, face, make bold, be so bold as: I would never dare to talk to my father that way. --n. 3) challenge, provocation, taunt; ultimatum: She took the dare and swam across the lake.