Synonyms of improbable

improbable

adjective

(ˌ)im-ˈprä-bə-bəl 

as in unlikely

not likely to be true or to occur

it seems improbable that the two writers never met since they traveled in the same social circles

Synonyms & Similar Words

• unlikely
• doubtful
• questionable
• dubious
• odd
• impossible
• far-fetched
• flimsy
• bizarre
• implausible
• incredible
• inconceivable
• unapt
• unbelievable
• fantastical
• unthinkable
• unimaginable
• ridiculous
• absurd
• fantastic
• outlandish
• foolish
• nonsensical
• preposterous
• unreal
• insane
• crazy
• wild
• remote
• slight
• outside

Antonyms & Near Antonyms

• probable
• likely
• plausible
• possible
• conceivable
• potential
• credible
• earthly
• believable
• imaginable
• liable

Examples of improbable in a Sentence

Recent Examples on the Web

Given its success and legacy — the first ever jazz album to go platinum, and one of the all-time most famous in the genre — that claim seems improbable. —Todd Gilchrist, Variety, 15 Aug. 2024

The improbable, charismatic, and instantly legendary partnership of Rafael Nadal and Carlos Alcaraz in men’s doubles at the Paris Olympics has come to an end. —Nick Remsen, Vogue, 31 July 2024

The Giants had just rattled off their improbable 107-win season in 2021 when Cobb signed a three-year, $36 million contract that winter. —Evan Webeck, The Mercury News, 28 July 2024

Outside, the far-right millennial operative and media personality Charlie Kirk was interviewing Ben Carson, an improbable clash of Republican generations. —Benjamin Wallace-Wells, The New Yorker, 18 July 2024