improbable

adjective

im·​prob·​a·​ble (ˌ)im-ˈprä-bə-bəl 

-ˈpräb-bəl

: unlikely to be true or to occur

also : unlikely but real or true

improbability

(ˌ)im-ˌprä-bə-ˈbi-lə-tē 

noun

improbably

(ˌ)im-ˈprä-bə-blē 

-ˈpräb-blē

adverb

Synonyms

• doubtful
• dubious
• far-fetched
• flimsy
• questionable
• unapt
• unlikely

Examples of improbable in a Sentence

The team made an improbable comeback.

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

Recent Examples on the Web

If Fishman’s math holds up, ESPN could be looking at a 20% boost in overall revenue in just seven years’ time—a feat that likely would be wholly improbable if the sports unit were to maintain the status quo or promote the streaming tyro at the expense of the foundational TV network. —Anthony Crupi, Sportico.com, 18 Dec. 2024

Now playing at the Belasco Theatre. 1. 'Oh, Mary!' With her short legs and long medleys, crazed first lady Mary Todd Lincoln has become an improbable pop-culture sensation, thanks to the deranged genius of playwright/actor Cole Escola. —Patrick Ryan, USA TODAY, 18 Dec. 2024

The Bears steal this game on the road to grab their fifth win of the year in improbable fashion. —Thomas G. Moukawsher, Newsweek, 17 Dec. 2024

Today, the language is seeing an improbable revival. —The Dial, 17 Dec. 2024

Word History

Etymology

Middle French or Latin; Middle French, from Latin improbabilis, from in- + probabilis probable

First Known Use

1598, in the meaning defined above

Kids Definition

improbable

adjective

im·​prob·​a·​ble (ˈ)im-ˈpräb(-ə)-bəl 

: not probable : unlikely to be true or to occur

improbability

(ˌ)im-ˌpräb-ə-ˈbil-ət-ē 

noun

improbably

(ˈ)im-ˈpräb(-ə)-blē 

adverb