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Synonyms

hellish

American  
[hel-ish] / ˈhɛl ɪʃ /

adjective

  1. of, like, or suitable to hell; infernal; vile; horrible.

    It was a hellish war.

  2. miserable; abominable; execrable.

    We had a hellish time getting through traffic.

  3. devilishly bad.

    The child's behavior was hellish most of the day.


hellish British  
/ ˈhɛlɪʃ /

adjective

  1. of or resembling hell

  2. wicked; cruel

  3. informal very difficult or unpleasant

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adverb

  1. informal (intensifier)

    a hellish good idea

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • hellishly adverb
  • hellishness noun

Etymology

Origin of hellish

First recorded in 1520–30; hell + -ish 1

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.

These real-life tradwives described hellish experiences, both for themselves and their children.

From Salon • Apr. 13, 2026

Finding the beauty in that hellish croak — something that Josh Groban was able to do in the last Broadway revival — can prove exceptionally difficult.

From Los Angeles Times • Feb. 3, 2026

Sections of charred scaffolding fell from the burning apartment blocks in hellish scenes late on Wednesday, as flames inside apartments sometimes belched out through windows into a night sky that glowed orange.

From Barron's • Nov. 27, 2025

After three hellish days in a drooling, Dramamine-induced coma, I failed my check ride.

From The Wall Street Journal • Oct. 17, 2025

But more than that, the kindness of the surprise gift was the real treasure—a glimpse of ordinary humanity in the long, terrifying, and hellish slog of battle.

From "A Thousand Sisters" by Elizabeth Wein