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Dictionary.com
Definitions

unconfirmed

ADJECTIVE
baseless
Synonyms
STRONGEST
flimsy gratuitous groundless unfounded unjustifiable unjustified unsubstantiated unsupported untenable unwarranted
WEAK
bottomless foundationless reasonless uncorroborated ungrounded
Antonyms
STRONGEST
called-for justified proven reasonable warranted
WEAK
based
ADJECTIVE
doubtful
Synonyms
STRONGEST
debatable dicey dubious hazy indecisive insecure precarious problematic suspicious uncertain undecided uneasy unsettled unstable unsure
WEAK
ambiguous borderline chancy clouded contingent disreputable doubtable dubitable equivocal far-fetched fat chance fishy hazardous iffy impugnable inconclusive indefinite indeterminate indistinct long shot obscure on thin ice open pending shady sneaky speculative suspect touch-and-go touchy up for grabs
Antonyms
STRONGEST
certain clear decided definite determined indubious safe secure settled stable strong sure trustworthy trusty undoubted
WEAK
believing confirmed convinced exact resolved trusting unquestionable
ADJECTIVE
hypothetical
Synonyms
STRONGEST
debatable imaginary problematic speculative theoretical vague
STRONG
academic contingent pretending suspect
WEAK
assumptive casual concocted conditional conjecturable conjectural contestable disputable doubtful equivocal imagined indefinite indeterminate postulated presumptive presupposed provisory putative questionable refutable stochastic supposed suppositional suppositious theoretic uncertain
Antonyms
STRONGEST
certain definite factual real sure
WEAK
calculated confirmed measured proved proven reliable truthful
ADJECTIVE
questionable
Synonyms
STRONGEST
ambiguous arguable controversial debatable dubious problematic suspicious unproven vague
WEAK
apocryphal contingent controvertible cryptic disputable dubitable enigmatic equivocal fishy hard to believe hypothetical iffy indecisive indefinite indeterminate moot mysterious obscure occult open to doubt open to question oracular paradoxical problematical provisional shady suspect undefined under advisement under examination unreliable unsettled
Antonyms
STRONGEST
certain clear definite incontrovertible indubious sure trustworthy trusty undoubted unquestionable
WEAK
indisputable proven
ADJECTIVE
tentative
Synonyms
STRONGEST
unsettled
WEAK
acting ad interim conjectural contingent dependent iffy indefinite makeshift not final not settled on trial open for consideration probationary provisional provisionary provisory speculative subject to change temporary test trial undecided
Antonyms
WEAK
certain conclusive decisive definite final sure
ADJECTIVE
unapt
Synonyms
WEAK
ambiguous borderline chancy clouded contingent debatable dicey disreputable doubtable dubious dubitable equivocal far-fetched fat chance fishy hazardous hazy iffy improbable impugnable inconclusive indecisive indefinite indeterminate indistinct insecure long shot obscure on thin ice open pending precarious problematic questionable shady sneaky speculative suspect suspicious touch-and-go touchy uncertain undecided uneasy unlikely unsettled unstable unsure up for grabs
ADJECTIVE
uncertain
Synonyms
STRONGEST
ambiguous ambivalent dubious erratic hazy hesitant insecure precarious questionable risky unclear undecided undetermined unpredictable unreliable unresolved unsettled unsure vague
WEAK
chancy conjectural fitful hanging by a thread iffy incalculable inconstant indefinite indeterminate indistinct irregular irresolute on thin ice speculative touch and go unfixed unforeseeable up for grabs up in the air vacillating variable wavering
Antonyms
STRONGEST
certain clear decided definite determined predictable reliable resolved safe secure settled sure trustworthy unchanging undoubted
WEAK
foreseeable
ADJECTIVE
unofficial
Synonyms
STRONGEST
informal personal
WEAK
off the record private uncorroborated unsanctioned
Antonyms
WEAK
authoritative authorized confirmed official
ADJECTIVE
unsubstantiated
Synonyms
STRONGEST
debatable dubious unsupported
WEAK
arguable controversial disputable doubtful dubitable fishy hard to believe iffy indefinite open to doubt open to question suspect suspicious uncertain uncorroborated
Antonyms
STRONGEST
certain sure
ADJECTIVE
void
Synonyms
STRONGEST
null
STRONG
avoided bad dead invalid negated voided
WEAK
forceless fruitless ineffective ineffectual inoperative not viable nugatory null and void set aside sterile unenforceable unfruitful unratified unsanctioned unsuccessful useless vain worthless
Antonyms
STRONG
worthy
WEAK
filled full meaningful occupied valid

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.

There are also unconfirmed reports that several of Ali Khamenei's grandchildren were killed.

From Barron's • Mar. 13, 2026

He had reportedly tried to buy the business for £10m, although this remains unconfirmed.

From BBC • Mar. 6, 2026

Iran’s unconfirmed claim that it hit an American oil tanker with a missile added to the supply concerns.

From The Wall Street Journal • Mar. 5, 2026

This finding lends support to a long-standing but previously unconfirmed idea that asexual reproduction may offer advantages in extreme environments.

From Science Daily • Mar. 2, 2026

For years many stories and quite a few unconfirmed rumors about the Strawberry Mesa Body Shop and Pipe Queen tycoon, Ruby Archuleta, had circulated between Milagro and Dona Luz.

From "The Milagro Beanfield War" by John Nichols