contend

Synonyms: argue battle clash confront contest controvert cope dispute emulate encounter face give all one’s got give one’s all go after go for go for broke go for it go for jugular grapple have at jockey for position jostle knock oneself out litigate lock horns make play for meet mix it up with oppose oppugn push push for resist rival scramble for shoot at shoot for skirmish stand strive struggle tangle with tug vie withstand

Antonyms: abandon desert give up leave retreat

Synonyms: affirm allege assert aver avow blast charge claim come at cross debate defend dictate dispute enjoin fly in face of gang up on go at have at have bone to pick hold insist jump on justify lace into lay into let have it light into lock horns with maintain mix mix it up prescribe put up argument report rip say set to sock it to one stick it to take on tell urge vindicate warrant zap

Antonyms: cede give in give up surrender