Unlikely

Part of speech: adjective (a.)

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

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

3. Not such as to inspire liking; unattractive; disagreeable. [Obs.] "The unlikely eld of me." Chaucer.

Part of speech: adverb (adv.)

In an unlikely manner.