unbelievable

adjective

un·​be·​liev·​able ˌən-bə-ˈlē-və-bəl 

: too improbable for belief

the plot is unreal and unbelievable

also : of such a superlative degree as to be hard to believe

the destruction was unbelievable

made an unbelievable catch in center field

unbelievably

ˌən-bə-ˈlē-və-blē 

adverb

Synonyms

• fantastic
• fantastical
• implausible
• inconceivable
• incredible
• incredulous
• uncompelling
• unconceivable
• unconvincing
• unimaginable
• unthinkable

Examples of unbelievable in a Sentence

a completely unbelievable story about why there was lipstick on his collar

Recent Examples on the Web

And to be able to see his international fans so soon has felt unbelievable. —Olivia Munson, USA TODAY, 21 Dec. 2024

These include ocean-view rooms with windows, verandah rooms with walk-out patios, concierge-level suites, inside cabins, and unbelievable two- and one-story suites. —Kimberly Holland, Southern Living, 19 Dec. 2024

The embarrassing truth is that, outside the U.S., shootings are perceived as an unbelievable piece of American culture. —Tim Ryan, Newsweek, 17 Dec. 2024

Connor Bedard had his first 3-point game since Nov. 3, including one of those unbelievable goals that just about only Bedard can score. —Mark Lazerus, The Athletic, 13 Dec. 2024

Word History

First Known Use

1548, in the meaning defined above

Kids Definition

unbelievable

adjective

un·​be·​liev·​able ˌən-bə-ˈlē-və-bəl 

1

: too unlikely for belief

an unbelievable story

2

: very significant or impressive

made an unbelievable catch in center field

unbelievably

-blē 

adverb