well mannered
adjective
• having or showing good manners; polite.
• "they were well mannered and eager to please"
Similar:
polite,
courteous,
well behaved,
civil,
gentlemanly,
ladylike,
genteel,
decorous,
respectful,
refined,
polished,
civilized,
cultivated,
gracious,
chivalrous,
urbane,
well bred,
well brought up,
mannerly,