Synonyms of unlikely

Adjective

1. improbable (vs. probable), unlikely, supposed(prenominal)

usage: not likely to be true or to occur or to have occurred; "legislation on the question is highly unlikely"; "an improbable event"

2. unlikely (vs. likely), farfetched, implausible, last, outside, remote

usage: has little chance of being the case or coming about; "an unlikely story"; "an unlikely candidate for reelection"; "a butcher is unlikely to preach vegetarianism"

3. improbable, unbelievable, unconvincing, unlikely, implausible (vs. plausible)

usage: having a probability too low to inspire belief

Definition and meaning of unlikely (Dictionary)