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[n] someone of remarkable excellence; "a humdinger of a secretary"
apotheosis, ideal, nonesuch, nonpareil, nonsuch, paragon, saint
ace, beaut, corker, crackerjack, daisy, dandy, darb, dilly, dream, honey, killer-diller, knockout, lollapaloosa, lulu, nifty, peach, pip, pippin, sweetheart, the nuts, whiz