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

The continuous shots might be unbelievable, but there are no sly edits, as cinematographer Matthew Lewis confirmed to Variety. —Christopher Rudolph, People.com, 1 Apr. 2025

Set intentions for unbelievable growth and embrace that this potential already exists within you. —Meghan Rose, Glamour, 1 Apr. 2025

This was another unbelievable season for Charter soccer. —Gary Curreri, Sun Sentinel, 28 Mar. 2025

The list has been updated to include these characters and the action star’s latest unbelievable moniker in A Working Man. —Rebecca Pahle, Vulture, 28 Mar. 2025

Word History

First Known Use

1548, in the meaning defined above

Rhymes for unbelievable

• achievable
• believable
• conceivable
• perceivable
• receivable
• retrievable
• inconceivable
• irretrievable

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