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See more synonyms for capper on Thesaurus.com
  1. a person or thing that caps.
  2. Also called topper. something that completes or adds to what has preceded it: The capper was that we didn't know each other after all.
  3. Slang. an informer, especially for gamblers.
  4. Slang. a by-bidder at an auction.
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Origin of capper

1350–1400 (for sense “cap maker”); 1580–90 (for def 1); Middle English; see cap1, -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for capper

completion, apex, climax, pinnacle, crown, height, eminence, payoff, culmination, altitude, crest, meridian, elevation, vertex, peak, acme, cap, roof, apogee, summit

Examples from the Web for capper

Contemporary Examples of capper

Historical Examples of capper

  • As a capper he digs up that envelop, to show her there needn't be any hitch in the program.

    Shorty McCabe

    Sewell Ford

  • It is amazing the many who were willing to play the part of capper in this game.

  • Rawlinson reported that Capper with two brigades was still in Ghent.


    John French, Viscount of Ypres

  • He is a sort of bouncer, or capper for that gambling joint run by Plimsoll.

    Rimrock Trail

    J. Allan Dunn

  • Capper (appearing quietly from room L., and locking the door behind him).