challenge Synonyms

dispute issue dare contest question difficulty take exception clash fight confront opposition gainsay test battle problem roun repugnancy SPAR repudiate renitency sparring renitence spur stand skepticize requisition rouse rivalry revendicate roust resistance scrutiny resist situation rival rencounter remonstration remonstrance protestation protest pressure poser pit pique outvie outdare ordeal oppugnation provocation provoke