'Gentlemanly' definitions:

Definition of 'gentlemanly'

From: WordNet
adjective
Befitting a man of good breeding; "gentlemanly behavior" [syn: gentlemanlike, gentlemanly]

Definition of 'Gentlemanly'

From: GCIDE
  • Gentlemanlike \Gen"tle*man*like`\, Gentlemanly \Gen"tle*man*ly\, a. Of, pertaining to, resembling, or becoming, a gentleman; befitting a man of good breeding; well-behaved; courteous; polite; as, gentlemanly behavior. [1913 Webster]

Synonyms of 'gentlemanly'

From: Moby Thesaurus