Unlikely

Not likely; improbable; not to be reasonably expected; as, an unlikely event; the thing you mention is very unlikely.

Not holding out a prospect of success; likely to fail; unpromising; as, unlikely means.

Not such as to inspire liking; unattractive; disagreeable.

In an unlikely manner.

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"