ad hoc
Americanadverb
adjective
adjective
Usage
What does ad hoc mean? Something ad hoc is put together on the fly for one narrow, pressing, or special purpose. For example, a government committee arranged to address one specific problem would be an ad hoc committee. More loosely, it can mean "spontaneous," "unplanned," or "on the spot."Ad hoc is one of those Latin phrases commonly found in academic, law, and government contexts. It literally means "for this (thing)."
Etymology
Origin of ad hoc
First recorded in 1550–60; from Latin ad hōc “for this, to this”
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.
Demonstrations are often organised in an ad hoc way via TikTok or Instagram.
From BBC ● Oct. 29, 2026
“Failure by a company to publish inside information as soon as possible in the form of an ad hoc disclosure constitutes a breach of the Market Abuse Regulation,” it said in a statement.
From The Wall Street Journal ● Oct. 9, 2026
The tribes hope it will turn their ad hoc emergency work — which has coincided with an increase of chi in the lake — into a lasting strategy to protect the fish.
From Los Angeles Times ● Sep. 11, 2026
Some have been driving pipes into the earth, making ad hoc irrigation systems to combat subterranean fires.
From BBC ● Sep. 6, 2026
“The ants were adding nutrients to the mud and hastening the reestablishment of less ad hoc food chains,” he wrote.
From "Mountain of Fire" by Rebecca E. F. Barone
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.