capper
Americannoun
-
a person or thing that caps.
-
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.
-
Slang. an informer, especially for gamblers.
-
Slang. a by-bidder at an auction.
Etymology
Origin of capper
1350–1400 (for sense “cap maker”); 1580–90 capper ( for def. 1 ); Middle English; see cap 1, -er 1
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A second straight Knicks loss would have been a brutal capper to a nasty 48 hours in New York.
From The Wall Street Journal ● Jun. 11, 2026
“This should put a capper, in our opinion, on blue-sky hopes for substantial multiple expansion,” he wrote.
From MarketWatch ● Feb. 5, 2026
As a capper, he fired Admiral Linda Fagan from commanding the Coast Guard.
From Salon ● Jan. 23, 2025
Rodriguez put a capper on the four-run inning, driving in Rojas from second with a ground ball up the middle that hit the second-base bag and bounced away from Trejo for an RBI single.
From Seattle Times ● Apr. 20, 2024
I told my partner to look out for the big gun and our new capper.
From Forty Years a Gambler on the Mississippi by George H. Devol
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
