Thesaurus.com
Dictionary.com
Definitions

unspeakable

[uhn-spee-kuh-buhl] / ʌnˈspi kə bəl /
ADJECTIVE
very bad; beyond description
Synonyms
STRONGEST
abominable appalling atrocious awful dreadful heinous horrible inconceivable indescribable ineffable inhuman monstrous odious shocking unbelievable unimaginable
WEAK
alarming beastly beyond words calamitous detestable dire disgusting evil execrable fearful frightening frightful horrid incommunicable indefinable inexpressible loathsome nameless obnoxious offensive outrageous overwhelming preternatural repellent repugnant repulsive revolting unutterable
Antonyms
STRONGEST
believable comforting definable delightful describable good imaginable likeable pleasant pleasing wonderful
WEAK
nice

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.

Asked about the lawsuit, OpenAI told AFP: "What happened in Tumbler Ridge was an unspeakable tragedy."

From Barron's • Mar. 10, 2026

Maybe someone down at the petrol station, to which William keeps sneaking to mollify his insatiable chocolate addiction and where local people do unspeakable things with the gas pumps.

From The Wall Street Journal • Feb. 12, 2026

Deputy US Attorney General Todd Blanche said at the time he hoped it would "bring closure" for Epstein's victims, who had endured "unspeakable pain".

From BBC • Feb. 6, 2026

Out in the benign but swollen landscape, so placid now but so full of potential unrest, unspeakable things have happened.

From Los Angeles Times • Sep. 22, 2025

Ought she lie, and say some horrible fate had befallen her speech, thus rendering it unspeakable?

From "The Interrupted Tale" by Maryrose Wood

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