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

Trying to challenge Ovando’s deportation in immigration court could rack up thousands of dollars in legal fees and leave Ovando stuck inside the Stewart Detention Center for an indefinite period. — Lautaro Grinspan, AJC.com, 10 Sep. 2026

Production was initially on an indefinite pause as the Fast family mourned their loss. — Derek Lawrence, Entertainment Weekly, 9 Sep. 2026

Mody’s comment about homeownership feeling indefinite captures a broader shift among renters who no longer view their unit as a temporary stop between leases and a mortgage. — Ryan Brennan, Charlotte Observer, 8 Sep. 2026

The defense argued that Clancy should be found not criminally responsible due to improperly treated mental illness, a verdict that likely would have resulted in her indefinite commitment to a forensic psychiatric facility. — Nancy Dillon, Rolling Stone, 4 Sep. 2026