Un‐like″ly, 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. “The unlikely eld of me.” Chaucer.