helluva         
adjective, adverb  informal uk/ˈhel.ə.və/ us/ˈhel.ə.və/ (also hell of a)
 极度地;极大的
extremely, or extremely big
  It's a helluva nice place. 这是个非常棒的地方。 
 We're going to have a helluva problem. 我们将会碰到一个非常棘手的问题。 
 a helluva guy, woman, teacher, etc. 极其喜欢的人/老师(等等)
a man, woman, teacher, etc. that you admire very much
  Our new boss is a helluva guy.
 I admire my wife because she's a helluva fighter.
 He's a helluva guitar player.
 My choral instructor is a helluva teacher.
 He was a helluva guy who worked for justice all his life.