unforgivable

adjective

un·​for·​giv·​able ˌən-fər-ˈgi-və-bəl 

-fȯr-

: too bad to be forgiven : not forgivable

an unforgivable crime/sin/error

Such boldness on the part of a man of my own class would have been almost unforgivable.

—Jack London

unforgivably

ˌən-fər-ˈgi-və-blē 

-fȯr-

adverb

Synonyms

• indefensible
• inexcusable
• inexpiable
• insupportable
• unjustifiable
• unpardonable
• unwarrantable

Examples of unforgivable in a Sentence

an unforgivable crime that society must seek just punishment for

they considered their friend's selfish behavior unforgivable

Recent Examples on the Web

One of them is the unforgivable delay in seriously investigating Trump. —Rebecca Beitsch, The Hill, 27 Nov. 2024

As a small country with many ill-wishers, surrounded by militias that clamor for its destruction, Israel often feels itself under siege and classifies any action against it as an unforgivable betrayal. —Arash Azizi, The Atlantic, 27 Nov. 2024

Not knowing major players in your space is unforgivable. —Jodie Cook, Forbes, 20 Nov. 2024

Milioti deliciously and strategically navigates Sofia’s descent into the mad state of someone forced to endure the harsh living conditions of Arkham, the intense electroshock treatments, and the even more unforgivable sin of gaslighting. —Nick Romano, EW.com, 14 Oct. 2024

Word History

First Known Use

1548, in the meaning defined above