Copy Citation
Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZSynonyms of fiendish
1
as in demonic
of, relating to, or worthy of an evil spirit
a fiendish delight in playing cruel tricks
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Thesaurus Entries Near fiendish
Cite this Entry
“Fiendish.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fiendish. Accessed 4 Feb. 2023.
More from Merriam-Webster on fiendish
Love words? Need even more definitions?
Merriam-Webster unabridged
-
- Often used to describe “the march of time,” what does inexorable mean?
Can you make 12 words with 7 letters?
PLAY
Words at Play
Ask the Editors
Word Games
-
A Good Old-Fashioned Quiz
Can you name these antiquated items?
Take the quiz
-
Which Came First?
"Leggings" or "mom jeans"? "Chillax" or "dumpster...
Take the quiz
-
True or False?
Test your knowledge - and maybe learn something a...
Take the quiz
-
Spelling Bee Quiz
Can you outdo past winners of the National Spelli...
Take the quiz
Share