unspeakable.

1. So shocking, atrocious, or distressing that it resists expression or seems unfit to be spoken of.

2. Too great, intense, or difficult to put into words.

Use it for

Words that belong together

• unspeakable cruelty
• an unspeakable crime

On the page

The testimony named the place but left the unspeakable cruelty largely unstated.

She refused to let unspeakable become an excuse for never recording what had happened.

Usage notes

Primary category: horror. Forms: Comparative more unspeakable; superlative most unspeakable where gradation is meaningful. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.