toss up verb 8toss-up noun 4forms 4 verb8 •To throw something upwards. •To make a decision based on chance, for example by flipping a coin or rolling a dice. •To casually mention as an idea. •(slang) To vomit.He began to vomit. Retching violently, he tossed up first the swaddled stone that he had eaten in the belief that it was Zeus, and then he vomited up Zeus's elder brothers and sisters […] — 1997 •To cook or prepare something quickly. •(Internet) To post or upload. •To produce, generate. •(slang) To beat up, thrash.He got in a fight last night and got tossed up. toss-up noun4 •A decision in which neither choice is clearly favorable or unfavorable, or for which the outcome does not matter.It's really a toss-up between the red skirt with blue stripes and the blue skirt with red stripes. They both look good and fit well. •Either of two outcomes that are equally likely.“He’ll do,” said the Doctor, quietly. “It must have been a toss-up all through the night. ’Think you’re to be congratulated on this case.” — 1889 •The toss of a coin used to decide some issue. •A toss-up question. formstossed up · tossing up · tosses up · toss-ups