fiendishadjective
uk/ˈfiːn.dɪʃ/us/ˈfiːn.dɪʃ/literary evil and cruel:
a fiendish attack
clever and difficult, sometimes in a bad way:
a fiendish crossword
a fiendish plot
UK old-fashioned very great:
a fiendish price
I'm in a fiendish hurry.
Thesaurus: synonyms and related words
Unkind, cruel & unfeeling
- acerbic
- acidly
- backbite
- backbiting
- backhanded
- barbaric
- bilious
- cruelty
- cutthroat
- hard-hearted
- have a heart of stone idiom
- have a sharp tongue idiom
- insensible
- malign
- remorseless
- ruthless
- sadism
- sadist
- savagery
- waspish
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You can also find related words, phrases, and synonyms in the topics:
Complicated and difficult to do
Serious and unpleasant
fiendishness
noun [ U ] uk/ˈfiːn.dɪʃ.nəs/us/ˈfiːn.dɪʃ.nəs/