Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

fiendish

play
adjective fiend·ish \ˈfēn-dish\

Simple Definition of fiendish

  • : very evil or cruel

  • : extremely bad, unpleasant, or difficult

Source: Merriam-Webster's Learner's Dictionary

Full Definition of fiendish

  1. 1 :  perversely diabolical <took a fiendish pleasure in hurting people>

  2. 2 :  extremely cruel or wicked

  3. 3 :  excessively bad, unpleasant, or difficult <fiendish weather>

fiendishly adverb
fiendishness noun

Examples of fiendish in a sentence

  1. He takes a fiendish delight in hurting people.

  2. <a fiendish delight in playing cruel tricks>



1529

First Known Use of fiendish

1529



Seen and Heard

What made you want to look up fiendish? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a timid, meek, or unassertive person

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

soothe reduce disapprove perplex
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ