gentlemanly

From gentleman +‎ -ly.

gentlemanly (comparative more gentlemanly, superlative most gentlemanly)

1. Of, being, pertaining to, or resembling a gentleman or gentlemen.
   • 2010, Catherine Rampell, “In Law Schools, Grades Go Up, Just Like That”, in The New York Times, 2010 June 22, page A1:

     Some schools bump up everyone’s grades, some just allow for more As and others all but eliminate the once-gentlemanly C.

gentlemanly (comparative more gentlemanly, superlative most gentlemanly)

1. In the manner or with the behavior of a gentleman; with social grace, politely.
   • 1938, Charles A. Johnson, A Narrative History of Wise County, Virginia, page 165:

     He went gentlemanly dressed in East Virginia style, wore a high-top silk hat, as had lawyer Park, and sported a gold headed walking cane.

• gentlemanliness

• ladylike