2. (noun) Some guy who plays some online games. He can be scary, but is strangely sexy and studly.
2. Kowai just killed everyone in PVP!!!
It means 'scary' or 'frightening' and it is opposite of kawaii wich means 'cute'.
<a> Have you seen that face?
<b> Yeah... It's little bit kowai...
<a> This is so kowaii! O_O
<b>It's KOWAI and not KOWAII.... tte bayo!
<a> NO! IT ISN'T!
<b> Yes, it is... Baka!