IPA: /ˈmænərlinəs/
KK: /ˈmænərlinəs/
The quality of being polite and showing good manners in behavior and actions.
Her mannerliness made her a favorite among her peers.
Mannerliness → It is formed from "manner" (from Old French *manière*, meaning way or method) and "-liness" (meaning the quality of being). The word "mannerliness" refers to the quality of behaving in a polite or proper way.
Think of 'manner' as a way of behaving and '-liness' as the quality of that behavior. This helps you remember that mannerliness means the quality of behaving properly.