also: かっけえ
expression
Colloquial contraction of かっこいい. Used in casual speech, especially among younger speakers, to express admiration for something or someone cool, stylish, or impressive.
See also: かっこいい
そのジャケット、かっけーな！
That jacket is so cool!
あのバンドの新曲、マジかっけー。
That band's new song is seriously awesome.