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

Established in 1987, Panama’s indefinite Pensionado Visa grants permanent residency to foreign nationals who can prove a lifetime monthly income or pension of at least $1,000 a month. — Brittany Chang, Condé Nast Traveler, 18 Aug. 2026

Foundations are required to distribute at least 5 percent of their assets annually, a rule created precisely to prevent charitable vehicles from becoming indefinite tax shelters. — Nick Allardice, Fortune, 15 Aug. 2026

The pop-country sibling trio The Band Perry surprised fans by announcing an indefinite hiatus in 2023, and shocked them by reforming as the husband-and-wife duo of Kimberly Perry and Johnny Costello in 2025. — Ryan Coleman, Entertainment Weekly, 12 Aug. 2026

Last week, the city's Planning Commission recommended placing an indefinite moratorium on new personal storage facilities while the city considers potential changes to its rules. — James Taylor, CBS News, 11 Aug. 2026