challenge

Synonyms: claiming confrontation dare defiance demanding demur interrogation objection protest provocation remonstrance summons to contest test threat trial ultimatum

Antonyms: agree answer decide win

Synonyms: accost arouse ask for assert beard brave call for call out claim confront cross dare defy demand denounce exact face down face off face the music fly in the face of hang in impeach impose impugn inquire insist upon investigate invite competition make a point of make a stand object to provoke query reclaim require search out stand up to stick it out stimulate summon tax test throw down the gauntlet try vindicate

Antonyms: agreement answer decision victory