What is "yakan" can't find the word?
I've always heard yakhan, yakkan in korean shows. I tried searching it but I've only found 약한 which means weak but I don't it's it.

Question

Answer

You might have heard the word 약간.
It means "a little, a bit, somewhat, slightly"

Answer

약하다 is a basic form of a Korean adjective meaning weak in English.
약하다 : a descriptive form. 약하고, 약하니, 약해서... "몸이 약해요."
약한(약하 + ㄴ) : a modifying form. 약한 몸, 약한 마음, 약한 사람...

예쁘다 : 예쁘고, 예쁘니, 예뻐서... "꽃이 예뻐요."
예쁜(예쁘 + ㄴ) : 예쁜 꽃, 예쁜 여자(magandang babae)