Dictionary.com
Thesaurus.com
Synonyms

devilish

American  
[dev-uh-lish, dev-lish] / ˈdɛv ə lɪʃ, ˈdɛv lɪʃ /

adjective

  1. of, like, or befitting a devil; diabolical; fiendish.

    Synonyms:
    excessive, infernal, demoniac, satanic
  2. extreme; very great.

    a devilish mess.


adverb

  1. excessively; extremely.

    He's devilish proud.

devilish British  
/ ˈdɛvlɪʃ, ˈdɛvəlɪʃ /

adjective

  1. of, resembling, or befitting a devil; diabolic; fiendish

"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. (intensifier)

    devilish good food

    this devilish heat

"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

Etymology

Origin of devilish

First recorded in 1400–50; late Middle English; see origin at devil, -ish 1

Explanation

You can describe someone as devilish if they're nasty and cruel, although this adjective is also used for rascally or naughty people, like the devilish kids you babysit. A devilish punishment is cruel, but a devilish preschooler simply misbehaves in a playful way. Since about 1600, the word devil has been used to mean not just an "evil, diabolical spirit," but also a "clever rogue." The adjective has followed suit, so you might describe a terrifying movie monster as a devilish creature, while also calling your favorite rascal a devilish creature.

Keep Reading on Vocabulary.com

Vocabulary lists containing devilish

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.

Naturally, it now promotes potatoes as a trick-or-treat option—or “trick-or-tater,” as the association puts it—and suggests any number of Halloween-themed potato recipes, such as one for Devilish Potatoes, a twist on deviled eggs.

From The Wall Street Journal • Oct. 30, 2025

Devilish training led to local races, then larger competitions.

From Los Angeles Times • Jul. 16, 2020

Devilish greens foiled golfers all over the Jack Nicklaus design Tuesday.

From Washington Post • Oct. 11, 2016

The Dastardly Death of the Devilish Director’s Daughter When reading Marisha Pessl’s Night Film, you might want to roll your eyes, but they’ll be glued to the page.

From Slate • Sep. 6, 2013

“I like to think I make up for the rather significant, err...beauty gap in other ways. Devilish charm and impeccable character, for instance.”

From "Amari and the Night Brothers" by B.B. Alston