体たい制せい側がわ

noun, noun which may take the genitive case particle 'no'

the establishment; the powers that be

Refers to the existing power structure, mainstream authorities, or institutional side, often in contrast with reformers, outsiders, or the general public.

• 彼かれは体たい制せい側がわの人にん間げんとして批ひ判はんを浴あびた。

  He was criticized as someone on the side of the establishment.

• 体たい制せい側がわの意い見けんばかりが通とおるのは問もん題だいだ。

  It's a problem that only the establishment's opinions get through.