1. courteous, gracious, nice, polite (vs. impolite)

usage: exhibiting courtesy and politeness; "a nice gesture"

2. courteous (vs. discourteous), chivalrous, gallant, knightly, respectful

usage: characterized by courtesy and gracious good manners; "if a man be gracious and courteous to strangers it shows he is a citizen of the world"-Francis Bacon

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See also: courteous (Dictionary)