PLA'INNESS, n. Levelness; evenness or surface.
1. Want of ornament; want of artificial show. So modest plainness sets off sprightly wit.2. Openness; rough, blunt or unrefined frankness. Your plainness and your shortness please me well.3. Artlessness; simplicity; candor; as unthinking plainness.4. Clearness; openness; sincerity. Seeing then we have such hope, we use great plainness of speech. 2 Cor.3.