Synonyms: especial, exceptional, special, particular
Definition: surpassing what is common or usual or expected
Usage: 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?
Similar words: uncommon
Definition: not common or ordinarily encountered; unusually great in amount or remarkable in character or kind
Usage: 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