The Collaborative International Dictionary of English v.0.48:
Well-mannered \Well`-man"nered\, a. Polite; well-bred; complaisant; courteous. --Dryden. [1913 Webster]WordNet (r) 3.0 (2006):
well-mannered adj 1: of good upbringing [syn: well-bred, well-mannered] 2: socially correct in behavior [syn: mannerly, well- mannered]