Commonly-used American Slang
スラング: killer
killer  =very cool, excellent, outstanding, impressive 2.very difficult
意味: 1.凄くいい 2.とても難しい
- killer 例文:
 - 1. That movie was a killer!
あの映画は凄く良かった。 - 2. That question is a killer. 
あの質問は凄く難しい。 
kick it up a notch← killer → kinda