'Unlikely' definitions:

Definition of 'unlikely'

From: WordNet
adjective
Not likely to be true or to occur or to have occurred; "legislation on the question is highly unlikely"; "an improbable event" [syn: improbable, unlikely] [ant: likely, probable]
adjective
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" [ant: likely]
adjective
Having a probability too low to inspire belief [syn: improbable, unbelievable, unconvincing, unlikely]

Definition of 'Unlikely'

From: GCIDE
  • Unlikely \Un*like"ly\, a.
  • 1. Not likely; improbable; not to be reasonably expected; as, an unlikely event; the thing you mention is very unlikely. [1913 Webster]
  • 2. Not holding out a prospect of success; likely to fail; unpromising; as, unlikely means. --Hooker. [1913 Webster]
  • 3. Not such as to inspire liking; unattractive; disagreeable. [Obs.] "The unlikely eld of me." --Chaucer. [1913 Webster]

Definition of 'Unlikely'

From: GCIDE
  • Unlikely \Un*like"ly\, adv. In an unlikely manner. [1913 Webster]