Synonyms of unsupported

unsupported

adjective

ˌən-sə-ˈpȯr-təd 

as in unreasonable

having no basis in reason or fact

an unsupported claim that the structure was built by Vikings

Synonyms & Similar Words

• unreasonable
• unsubstantiated
• invalid
• unfounded
• baseless
• unwarranted
• irrational
• groundless
• false
• unreasoned
• unnecessary
• misleading
• absurd
• illogical
• weak
• inconsistent
• nonvalid
• foundationless
• fallacious
• wrong
• untenable
• implausible
• unconvincing
• unsound
• unconscionable
• misled
• specious
• flimsy
• meaningless
• stupid
• gratuitous
• foolish
• uncalled-for
• silly
• nonsensical
• nonlogical
• fatuous
• insane
• unwise
• asinine
• ill-advised
• preposterous
• wacky
• simpleminded
• harebrained
• mad
• nutty
• senseless
• brainless
• crackpot
• crazy
• half-witted

Antonyms & Near Antonyms

• valid
• reasonable
• hard
• good
• justified
• reasoned
• just
• certified
• confirmed
• substantiated
• logical
• well-founded
• rational
• actual
• validated
• true
• informed
• well-grounded
• real
• certain
• sensible
• wise
• sane
• genuine
• corroborated
• sober
• verified
• solid
• clear
• plausible
• sure
• sound
• credible
• compelling
• convincing
• persuasive
• commonsense
• satisfying
• cogent

Example Sentences

Recent Examples of unsupported

And in a political climate where unsupported conspiracies about election fraud can run rampant on social media — pushed, at times, by top political leaders — some fear the slow vote count is becoming a liability. — Grace Toohey, Los Angeles Times, 14 June 2026

But many Mac owners who purchased late-model Intel machines in 2019 and 2020 could still run the latest version of the operating system, and third-party utilities like the OpenCore Legacy Patcher helped more adventurous Mac owners use their unsupported hardware a bit longer. — Andrew Cunningham, ArsTechnica, 8 June 2026

The 4th-generation (A14) and 5th-generation (M1) iPad Air are supported, not unsupported. — Tom Warren, The Verge, 8 June 2026

In a world teeming with unsupported performance claims, Renwick’s draw comes from a different place — clothes that are wearable, look graceful, and don’t require a tee time to make sense. — Stacia Datskovska, Footwear News, 4 June 2026