gentlemanly
Definitions
Polite, refined, and honorable in conduct or manner.
Characteristic of or befitting a man of high social standing or good breeding.
Examples
He maintained a gentlemanly composure even when the situation became heated.
It was a very gentlemanly gesture for him to offer his seat to the elderly woman on the train.
Synonyms
chivalrous courteous refined polite gallant well-mannered civil