fiendish
adjective
diabolically cruel and wicked.
fiendishly
-
a word derived from
fiendish.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The geopolitics of the Horn of Africa are fiendishly complex, with shifting alliances and the involvement of many outside actors with conflicting interests.
From Barron's ● Oct. 2, 2026
He says the benefit of the current system is its simplicity which shouldn't be replaced with "something fiendishly complex and highly intrusive, which would take many decades to implement in full."
From BBC ● Jun. 30, 2026
Bown and Keynes dip into the world of “preppers” to make a pointed observation: knowing when a genuine crisis is coming, and when to build or draw down strategic reserves, is fiendishly hard for governments.
From The Wall Street Journal ● Jun. 23, 2026
Imelda Marcos’ fetish for fiendishly expensive shoes was a running gag in the 1980s.
From Los Angeles Times ● Feb. 20, 2026
This was a class of fiendishly bright kids who knew just how bright they were.
From "Bad Boy" by Walter Dean Myers
