indefinite

adjective

in·​def·​i·​nite (ˌ)in-ˈde-fə-nət 

-ˈdef-nət

: not definite: such as

a

: not precise : vague

b

: having no exact limits

c

: typically designating an unidentified, generic, or unfamiliar person or thing

the indefinite articles a and an

indefinite pronouns

indefinite noun

indefinitely adverb

indefiniteness noun

Synonyms

• infinite
• endless

Examples of indefinite in a Sentence

We're stuck here for an indefinite period of time.

Their plans have been put on indefinite hold.

She is indefinite about her plans.

Recent Examples on the Web

Ukraine could, for example, withdraw its troops from particular areas without making any formal territorial concessions, creating an unrecognized but indefinite line of separation, like the one that followed the Korean armistice, in 1953, or the division of Berlin, during the Cold War. —Joshua Yaffa, New Yorker, 22 Aug. 2025

But last week, the 33-year-old asked his attorney to drop his appeal, preferring repatriation to the possibility of indefinite detention. —Ben Wieder, Sun Sentinel, 21 Aug. 2025

Just a year ago, some American intellectuals and policymakers hoped that this system could survive into the indefinite future, so that unilateral U.S. coercive strength and liberal values would continue to go hand in hand. —Henry Farrell, Foreign Affairs, 19 Aug. 2025

Air Canada flight attendants have begun an indefinite strike, grounding most flights and impacting thousands of passengers. —Zach Wichter, USA Today, 16 Aug. 2025

Word History

Etymology

Latin indefinitus, from in- + definitus definite

First Known Use

1530, in the meaning defined above

Phrases Containing indefinite

• indefinite article
• indefinite integral
• indefinite pronoun

Rhymes for indefinite

• definite

Kids Definition

indefinite

adjective

in·​def·​i·​nite (ˈ)in-ˈdef-(ə-)nət 

1

: not clear or fixed in meaning or details : vague

an indefinite answer

2

: not certain or limited (as in amount or length)

an indefinite period

3

: typically designating a person or thing that is unidentified or cannot be immediately identified

the indefinite articles "a" and "an"

indefinite noun

indefinitely adverb

indefiniteness noun