uncommon -
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"
common having no special distinction or quality; widely known or commonly encountered; average or ordinary or usual; "the common man"; "a common sailor"; "the common cold"; "a common nuisance"; "followed common procedure"; "it is common knowledge that she lives alone"; "the common housefly"; "a common brand of soap"
extraordinary (of an official) serving an unusual or special function in addition to those of the regular officials; "an ambassador extraordinary"
unusual not commonly encountered; "two-career families are no longer unusual"
especial,
exceptional,
particular,
special surpassing what is common or usual or expected; "he paid especial attention to her"; "exceptional kindness"; "a matter of particular and unusual importance"; "a special occasion"; "a special reason to confide in her"; "what's so special about the year 2000?"
rare not widely distributed; "rare herbs"; "rare patches of green in the desert"
red-carpet,
red carpet special treatment or hospitality; "the maitre d' gave them the red-carpet treatment"
unusual not commonly encountered; "two-career families are no longer unusual"
uncommon -
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"
