gnarly 
/ˈnɑɚli/ adjective
gnarl·i·er; gnarl·i·est /ˈnɑɚli/ adjective 1 : gnarled
▪ gnarly branches 2 US slang a : very difficult or bad
▪ a gnarly situation ▪ a gnarly accident
b : very good
▪ some gnarly guitar playing
▪ gnarly branches
▪ a gnarly situation ▪ a gnarly accident
b : very good
▪ some gnarly guitar playing
