体裁 ていさいぶらなくてもいい
teisaiburanakutemo iu

Godan Verb (ru)
i-Adjective

Expresses lack of necessity ("don't have to do") of 体裁ぶる

1. No need to put on airs.; You don't have to bother with appearances.; You don't need to be formal.

Negative
Permission