社交しゃこう辞令じれい
shakōjirei

Noun

1. something said for politeness' sake; diplomatic language; honeyed words; lip service; empty compliment

Yojijukugo
きみっていることはただの社交しゃこう辞令じれいだよ。
kimino itte iru kotowa tadano shakōjirēdayo.
You're just being diplomatic.