MANNERLY
mannerly, well-mannered
(adjective) socially correct in behavior
Source: WordNet® 3.1
Etymology
Adjective
mannerly (comparative more mannerly, superlative most mannerly)
Polite, having good manners.
Adverb
mannerly (comparative more mannerly, superlative most mannerly)
Politely; with good manners.
Source: Wiktionary
Man"ner*ly, a.
Definition: Showing good manners; civil; respectful; complaisant.
What thou thinkest meet, and is most mannerly. Shak.
Man"ner*ly, adv.
Definition: With good manners. Shak.
Source: Webster’s Unabridged Dictionary 1913 Edition