Capper

//ˈkæ.pəɹ// name, noun, slang

name, noun, slang ·Moderate ·College level

Definitions

Noun
  1. 1
    A device or person that applies caps, as to bullets or bottles.
  2. 2
    A person who records a television broadcast to their computer. Internet
  3. 3
    A person who caps i.e. is inclined to untruth, a fibber. slang
  4. 4
    A person that makes or sells caps.
  5. 5
    A finale; something that is conclusively better, or "caps it all off".

    "And the capper of it all was, Stacy flew back to Memphis to see me for a day and try to settle our divorce with a one-on-one meeting."

Show 1 more definition
  1. 6
    A by-bidder; a decoy for gamblers. US, dated, slang
Proper Noun
  1. 1
    A surname.

Synonyms

All synonyms
agent provocateurboostercherry on the cakedecoyicing on the cakeplant

Example

More examples

"And the capper of it all was, Stacy flew back to Memphis to see me for a day and try to settle our divorce with a one-on-one meeting."

Etymology

Etymology 1

From Middle English capper; equivalent to cap + -er.

Etymology 2

Abbreviated form of capture + -er.

Etymology 3

From cap + -er.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.