Definition of fiendish
1 : perversely diabolical took a fiendish pleasure in hurting people
2 : extremely cruel or wicked
3 : excessively bad, unpleasant, or difficult fiendish weather
Examples of fiendish in a Sentence
He takes a fiendish delight in hurting people.
a fiendish delight in playing cruel tricks
Recent Examples of fiendish from the Web
Like painter Ron English, who’s churned out dozens of fiendish variations on the Ronald McDonald mascot, TrustoCorp uses 21st-century brand-name iconography as raw material for its art.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fiendish'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of fiendish
FIENDISH Defined for English Language Learners
Definition of fiendish for English Language Learners
: very evil or cruel
: extremely bad, unpleasant, or difficult
Seen and Heard
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