fiendish
adjective uk/ˈfiːn.dɪʃ/ us/ˈfiːn.dɪʃ/
literary恶魔般的;残忍的
evil and cruel
a fiendish attack 残忍的袭击
巧妙而又困难的；刁钻的，棘手的
clever and difficult, sometimes in a bad way
a fiendish crossword 复杂的纵横填字游戏
a fiendish plot 险恶的阴谋
UK old-fashioned极度的
very great
a fiendish price 天价
I'm in a fiendish hurry. 我非常急。