UNCOMMON
uncommon
(adjective) not common or ordinarily encountered; unusually great in amount or remarkable in character or kind; “uncommon birds”; “frost and floods are uncommon during these months”; “doing an uncommon amount of business”; “an uncommon liking for money”; “he owed his greatest debt to his mother’s uncommon character and ability”
rare, uncommon
(adjective) marked by an uncommon quality; especially superlative or extreme of its kind; “what is so rare as a day in June”-J.R.Lowell; “a rare skill”; “an uncommon sense of humor”; “she was kind to an uncommon degree”
Source: WordNet® 3.1
Etymology
Adjective
uncommon (comparative uncommoner, superlative uncommonest)
Rare; not readily found; unusual.
Remarkable; exceptional.
Synonyms
• (rare): infrequent, raresome, scarce; see also rare
Adverb
uncommon (not comparable)
(archaic, UK, dialect) Exceedingly, exceptionally.
Source: Wiktionary
Un*com"mon, a.
Definition: Not common; unusual; infrequent; rare; hence, remarkable;
strange; as, an uncommon season; an uncommon degree of cold or heat;
uncommon courage.
Syn.
– Rare; scarce; infrequent; unwonted.
– Un*com"mon*ly, adv.
– Un*com"mon*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition