YOU SAID:

my brother is a snitch, and he seems to be pretty dumb

INTO JAPANESE

私の兄はスニッチで、彼はかなり愚かなようです

BACK INTO ENGLISH

My brother is a Snich, and he seems to be pretty stupid

INTO JAPANESE

私の兄はスニッチで、彼はかなり愚かであるようです

BACK INTO ENGLISH

My brother is a Snich, and he seems to be pretty stupid