adjective, un·com·mon·er, un·com·mon·est.
- not common; unusual; rare: an uncommon word.
- unusual in amount or degree; above the ordinary: an uncommon amount of mail.
- exceptional; remarkable.
adjective
- outside or beyond normal experience, conditions, etc; unusual
- in excess of what is normalan uncommon liking for honey
adverb
- an archaic word for uncommonly (def. 2)
adj.1540s, “not possessed in common,” from un- (1) “not” + common (adj.). Meaning “not commonly occurring, unusual, rare” is recorded from 1610s. Related: Uncommonly.