score off verb 3score-off noun 1forms 4 verb3 •(slang) To defeat (especially in an argument), get the better of, achieve a success over, gain an advantage or win points over, make a point to the detriment or at the expense of, make appear foolish. Sometimes with particle on (someone).The old hag never missed out on any opportunity to score off on her daughter-in-law.Whether it was politics, trade, competition in industry, snobbery, boasting, self-advertisement, or gossip, the object was to score off one's adversary and put him down. •(slang) To defeat (someone) verbally; to win a confrontation with words; to tell (someone) off. •To delete or remove (especially from a list); to score out, strike out or strike off, cross out or cross off; to draw a line through.You can score off my name, I quit.You can score my name off, I quit. score-off noun1 •(rare) The action or result of scoring off someone (a rebuttal, a point won).There were a thousand and one gems of café-chatter, of tit-for-tattle – of score-offs and well-rubbed-ins. — 1930 formsscored off · scoring off · scores off · score-offs