1.AdjectiveNot likely; improbable; not to be reasonably expected.
"It is pretty unlikely that you'll win, but I will pray that at least you do well.; In the highly unlikely event of landing in water, lifejackets are stored under the seat."
2.AdjectiveNot holding out a prospect of success; likely to fail; unpromising.
"unlikely means"
3.Adverb(The addition of quotations indicative of this usage is being sought:) In an improbable manner.