Source : WordNet®

one and only
     adj : eminent beyond or above comparison; "matchless beauty"; "the
           team's nonpareil center fielder"; "she's one girl in a
           million"; "the one and only Muhammad Ali"; "a peerless
           scholar"; "infamy unmatched in the Western world";
           "wrote with unmatchable clarity"; "unrivaled mastery of
           her art" [syn: {matchless}, {nonpareil}, {one(a)}, {one
           and only(a)}, {peerless}, {unmatched}, {unmatchable}, {unrivaled},
            {unrivalled}]