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Synonyms

ammo

American  
[am-oh] / ˈæm oʊ /

noun

Informal.

  1. ammunition.

ammo British  
/ ˈæməʊ /

noun

  1. informal short for ammunition

"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

Etymology

Origin of ammo

amm(unition) + -o

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.

That's not going to give me any ammo.

From BBC • Mar. 23, 2026

Think of it as ammo to advance in your career, which—let’s face it—is not so different from winning a popularity contest.

From The Wall Street Journal • Jan. 29, 2026

The trading halt sparked a wave of congressional hearings and provided the SEC with plenty of ammo to reform markets.

From Barron's • Jan. 23, 2026

“Predator” is prime Reagan-era action propaganda, closely associating male potency with guns and their firepower, daring to counter that gospel by reminding its audience of how soft humans are once the ammo runs out.

From Salon • Nov. 12, 2025

So Toby used the only ammo he had—Annie.

From "We'll Fly Away" by Bryan Bliss

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.