Synonyms of indefinite

indefinite

adjective

(ˌ)in-ˈde-fə-nət 

1

as in infinite

being or seeming to be without limits

the indefinite vastness of the frozen tundra

Synonyms & Similar Words

• infinite
• endless
• unlimited
• limitless
• vast
• boundless
• immeasurable
• illimitable
• measureless
• unbounded
• fathomless
• unfathomable
• horizonless
• extensive
• immense
• immensurable
• bottomless
• innumerable
• incalculable
• inexhaustible
• countless
• unmeasured
• inestimable
• abysmal
• incomputable
• exhaustless
• far-flung

Antonyms & Near Antonyms

• limited
• definite
• finite
• confined
• restricted
• circumscribed
• bounded
• measurable
• superficial
• shallow
• fathomable
• depthless

2

as in vague

not expressed in precise terms

an indefinite longing for something new and exciting in her life

Synonyms & Similar Words

• vague
• unclear
• ambiguous
• fuzzy
• cryptic
• inexplicit
• confusing
• obscure
• enigmatic
• indeterminate
• nebulous
• uncertain
• undefined
• unintelligible
• muzzy
• equivocal
• indistinct
• undetermined
• hazy
• murky
• faint
• blurry
• inexplicable
• mysterious
• dim
• dark
• foggy
• misty
• undefinable
• indistinguishable
• inscrutable
• perplexing
• bleary
• baffling
• puzzling
• unfathomable
• woozy
• confounding
• gauzy
• bewildering
• mystifying
• obfuscatory

Antonyms & Near Antonyms

• definite
• specific
• explicit
• clear
• direct
• open
• straight
• obvious
• frank
• unambiguous
• unequivocal
• outspoken
• straightforward
• honest
• plain
• candid
• forthright
• understandable
• unguarded
• distinct
• intelligible
• comprehensible
• defined
• openhearted
• plainspoken
• unmistakable
• foursquare
• blatant
• patent
• fathomable
• well-defined

3

as in faint

not seen or understood clearly

through the dense fog we could just barely discern the indefinite form of another boat

Synonyms & Similar Words

• vague
• faint
• hazy
• undefined
• nebulous
• undetermined
• indistinct
• unclear
• fuzzy
• pale
• obscure
• shadowy
• dim
• blurry
• dark
• opaque
• murky
• indistinguishable
• foggy
• misty
• blear
• bleary
• dusky
• invisible
• intangible
• gauzy
• gloomy
• mysterious
• inexplicable
• incomprehensible
• impalpable
• puzzling
• inappreciable
• indiscernible
• hieroglyphic
• indecipherable
• obfuscatory

Antonyms & Near Antonyms

• definite
• clear
• distinct
• certain
• obvious
• evident
• plain
• pellucid
• bright
• strong
• sure
• firm

Example Sentences

Recent Examples of indefinite

Several weeks have now turned into an indefinite amount of time away from the Buckeyes, and Day admitted the team is preparing as if Sayin won’t be available for the remainder of the regular season, and even worse, the College Football Playoff. — Scott Thompson Outkick, FOXNews.com, 20 Oct. 2026

Kyedae has been on an indefinite hiatus from streaming since April 2025. — Ct Jones, Rolling Stone, 20 Oct. 2026

In the meantime, posting online brings the risk of having jokes ripped off not just once, but an indefinite amount of times, across accounts, and by all kinds of different bots. — Matt Grobar, Deadline, 16 Oct. 2026

Encryption does not justify unnecessary collection, indefinite retention or intrusive profiling. — Expert Panel®, Forbes.com, 16 Oct. 2026