theirs
Americanpronoun
-
a form of the possessive case of plural they used as a predicate adjective, after a noun or without a noun: Oh, you know Walt and Liz—are you a friend of theirs?
It is theirs.
Oh, you know Walt and Liz—are you a friend of theirs?
-
a form of the possessive case of singular they used as a predicate adjective, after a noun or without a noun.
-
(used to refer to a generic or unspecified person previously mentioned, about to be mentioned, or present in the immediate context).
I have my book—does everyone else have theirs?
-
(used to refer to a specific or known person previously mentioned, about to be mentioned, or present in the immediate context).
The child couldn’t say whether or not the coat was theirs.
-
(used to refer to a nonbinary or gender-nonconforming person previously mentioned, about to be mentioned, or present in the immediate context).
I've already gotten my coffee, but Morgan is still waiting to get theirs.
-
-
that which belongs to them.
The Joneses don't usually flaunt their money, but theirs is the largest house on the block.
pronoun
-
something or someone belonging to or associated in some way with them
theirs is difficult
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not_standard something or someone belonging to or associated in some way with an indefinite antecedent such as one, whoever, or anybody
everyone thinks theirs is best
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belonging to or associated with them
Usage
See they.
Etymology
Origin of theirs
First recorded in 1150–1200; Middle English theires, thair(e)s, theres; see origin at their, -s 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.
Though experiences like theirs helped inspire these reforms, both Flynn and Varsha are somewhat sceptical of them.
From BBC ● Oct. 16, 2026
“No mayor has retained the same police commissioner from the administration prior to theirs since 1964,” she said, referring to Tisch, who was elevated under the previous mayor, Eric Adams.
From Slate ● Oct. 15, 2026
"We can't live together. Our lives and theirs are completely different; we're not compatible," Cohen said.
From Barron's ● Oct. 13, 2026
“There’s no sense in them buying a car when they could rent one for a few hundred bucks, and it’s theirs forever.”
From Los Angeles Times ● Oct. 11, 2026
This roadside restaurant had been a favorite of theirs for years.
From "Most Dangerous: Daniel Ellsberg and the Secret History of the Vietnam War" by Steve Sheinkin
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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.