do the decent thing

do the decent thing (third-person singular simple present does the decent thing, present participle doing the decent thing, simple past did the decent thing, past participle done the decent thing)

1. (idiomatic) To take the most honourable or appropriate course of action, even if is not necessarily in the person's own interests.

   Mr Speaker, will the Prime Minister do the decent thing and resign?

• “do the decent thing”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.