gainer

American

[gey-ner] / ˈgeɪ nər /

noun

a person or thing that gains.
full gainer.

gainer British

/ ˈɡeɪnə /

noun

a person or thing that gains
Also called: full gainer. a type of dive in which the diver leaves the board facing forward and completes a full backward somersault to enter the water feet first with his back to the diving board Compare half gainer

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

pregainer noun

Etymology

Origin of gainer

First recorded in 1530–40; gain 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.

Cloudflare’s growth was double that of Lumen Technologies, the next-biggest gainer.

From The Wall Street Journal • Jan. 9, 2026

Lam Research, however, was up 1.1% at $179.28, making it the group’s top gainer.

From Barron's • Dec. 26, 2025

But Nvidia’s stock has been a strong gainer for the year, up 30%.

From MarketWatch • Dec. 1, 2025

It’s still the S&P 500’s biggest gainer so far this year, rising about 40%.

From Seattle Times • Feb. 20, 2024

He did the same lousy old half gainer all day long.

From "The Catcher in the Rye" by J. D. Salinger

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023