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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.

An Open AI spokesperson said the shooting in Tumbler Ridge was “an unspeakable tragedy,” and the company stands ready to work with senior government officials to make changes to prevent similar tragedies in the future.

From The Wall Street Journal • Mar. 10, 2026

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

From Barron's • Mar. 10, 2026

Speaking at Rabbi Schlanger's funeral, Rabbi Levi Wolff described his death as an "unspeakable loss" for the community.

From BBC • Dec. 17, 2025

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

I shake my two hairy fists at the sky and I let out a howl so unspeakable that the water at my feet turns sudden ice and even I myself am left uneasy.

From "Grendel" by John Gardner

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