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Showing results for improbable. Search instead for improbabi.
Definitions

improbable

[im-prob-uh-buhl] / ɪmˈprɒb ə bəl /
ADJECTIVE
not likely
Synonyms
STRONGEST
fanciful implausible rare unbelievable unlikely
WEAK
doubtful dubious far-fetched flimsy hundred-to-one iffy inconceivable not expected outside chance questionable slim slim and none uncertain unconvincing unheard of unimaginable unsubstantial weak
Antonyms
STRONGEST
believable likely ordinary plausible probably real
WEAK
ostensible possible probable tenable

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.

Then came the most improbable comeback in college basketball’s modern history.

From The Wall Street Journal • Mar. 30, 2026

And those were the images that returned with his improbable fifth Masters victory in 2019, fused back and all, achieved at the age of 43.

From BBC • Mar. 28, 2026

His grandfather Jerry Bush had coached at Nebraska, where in 1958 he authored an improbable victory over a Kansas team led by Wilt Chamberlain.

From The Wall Street Journal • Mar. 22, 2026

At least that’s what one improbable image fantasized in a recent slew of AI-generated “wedding photos” circulating online.

From Los Angeles Times • Mar. 17, 2026

The rhythmic sounds might be the recapitulation of something else—an earliest memory, a score for the transformation of inanimate, random matter in chaos into the improbable, ordered dance of living forms.

From "The Lives of a Cell" by Lewis Thomas

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.