fiendishly C1 Topic:Describing Qualities UK /ˈfiːndɪʃli/ See IPA manual Freq #59859 Meanings 1 adv In an evil or wicked way. The guards grinned fiendishly as they locked the prisoners in their cells. 2 adv Extremely (often before a difficult or unpleasant quality). The new safe was fiendishly hard to crack. Thesaurus Synonyms 1 adv · in an evil or wicked way. devilishlysatanically More diabolically Word family Related forms fiendfiendishfiendishness Etymology AI details From fiendish + -ly. Topics Describing Qualities Word Formation & Derivatives External links Cambridge Dictionary Wiktionary Google Images # fiendishly **Type:** Word **Level:** C1 **Part of speech:** adv **IPA (UK):** /ˈfiːndɪʃli/ **Frequency rank:** 59859 ## Meanings 1. In an evil or wicked way. 2. Extremely (often before a difficult or unpleasant quality). ## Examples - The guards grinned fiendishly as they locked the prisoners in their cells. - The new safe was fiendishly hard to crack. ## Synonyms - devilishly - diabolically ## Related Forms - fiend - fiendish - fiendishness ## Etymology From fiendish + -ly. ## AI Etymology Fiendishly is from fiendish + -ly. In present-day use, it can mean in an evil or wicked way, or extremely (often before a difficult or unpleasant quality). Related vocabulary includes fiend, fiendish, and fiendishness. ## Topics - Describing Qualities - Word Formation & Derivatives markdown