far more than usual or expected; "an extraordinary desire for approval"; "it was an over-the-top experience"
beyond what is ordinary or usual; highly unusual or exceptional or remarkable; "extraordinary authority"; "an extraordinary achievement"; "her extraordinary beauty"; "enjoyed extraordinary popularity"; "an extraordinary capacity for work"; "an extraordinary session of the legislature"
not suspected or believed likely; "remained unsuspected as the head of the spy ring"; "he was able to get into the building unspotted and unsuspected"; "unsuspected difficulties arose"; "unsuspected turnings in the road"
highly unusual or rare but not the single instance; "spoke with a unique accent"; "had unique ability in raising funds"; "a frankness unique in literature"; "a unique dining experience"
liable to sudden unpredictable change; "erratic behavior"; "fickle weather"; "mercurial twists of temperament"; "a quicksilver character, cool and willful at one moment, utterly fragile the next"
likely to perform unpredictably; "erratic winds are the bane of a sailor"; "a temperamental motor; sometimes it would start and sometimes it wouldn't"; "that beautiful but temperamental instrument the flute"- Osbert Lancaster
having no fixed course; "an erratic comet"; "his life followed a wandering course"; "a planetary vagabond"
someone who is appointed or elected to an office and who holds a position of trust; "he is an officer of the court"; "the club elected its officers for the coming year"