Meaning of the word fiendish in English

What does fiendish mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

fiendish

US /ˈfiːn.dɪʃ/
UK /ˈfiːn.dɪʃ/
"fiendish" picture

Adjective

1.

extremely cruel or unpleasant

Example:
The villain devised a fiendish plot to take over the world.
He let out a fiendish laugh as he revealed his true intentions.
2.

difficult or complicated

Example:
Solving the Rubik's Cube is a fiendish puzzle.
The exam had some truly fiendish questions.