"unlikely" in the adjective sense
1. improbable, unlikely
not likely to be true or to occur or to have occurred
"legislation on the question is highly unlikely"
"an improbable event"
2. unlikely
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
having a probability too low to inspire belief
Source: WordNet® (An amazing lexical database of English)
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