Definition of fiendish
- took a fiendish pleasure in hurting people
- fiendish weather
He takes a fiendish delight in hurting people.
a fiendish delight in playing cruel tricks
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.
red in tooth and claw;
: very evil or cruel
: extremely bad, unpleasant, or difficult
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