take on

Synonyms: acquire add address oneself to adopt agree to do annex append attempt become begin come to have commence develop embrace employ endeavor engage enlist enroll espouse handle have a go at hire launch put on retain set about tackle take in hand take up take upon oneself try turn undertake venture

Antonyms: refuse reject

Synonyms: attack battle contend contest encounter engage face fight match meet oppose pit vie

Synonyms: brave buck call out confront dare defy denounce dispute face off go eyeball to eyeball with go one on one with go toe to toe with go up against hang in insist upon investigate invite competition make a stand object to question stand up to throw down the gauntlet