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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.

Soldiers, marines, and their support crews need food, water, ammo, and other supplies; a base of some sort would have to be set up.

From Slate • Apr. 1, 2026

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

“Today I been selling ammo at about two hundred times the normal rate 1 usually sell it.”

From "The Milagro Beanfield War" by John Nichols

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.