Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun toss-up

1 sense of toss-up

Sense 1
tossup, toss-up, even chance -- (an unpredictable phenomenon; "it's a toss-up whether he will win or lose")
       => luck, fortune, chance, hazard -- (an unknown and unpredictable phenomenon that causes an event to result one way rather than another; "bad luck caused his downfall"; "we ran into each other by pure chance")