Define Fiendish Meaning

Fiendish
Devilish,spiteful,,frightening,alluring ,

The masked man said in a fiendish manner...
It was a fiendish place to look at...
The girl danced in a fiendish manner...
Grimly Fiendish...The Damned
By Helenka
Fiendish
Used to describe something (eg. an all-nighter) a bit mad/crazy/wicked etc. for various reasons, usually relating to alcohol/drug intake.

"did you see how many bennie's kel did last night?!!"
"yes! he had such a fiendish one the nutter!"
By Marylynne
Fiendish
the way to be.

Did you see that girl? She was so fiendish i got a stiffy!
By Lora
Fiendish Fiend
Someone you absolutely despise because they have annoyed you for so long. Usually used in a comical, or sarcastic sense.

Person A: You Fiendish Fiend!
Person B: Hah! got your nose!
By Tersina