1) Amenities 2) Blandness 3) Graciousness 4) Smooth and gracious in manner 5) Smoothness of manner 6) Social tact 7) Suaveness 1) Courtesy 2) Polish 3) Suaveness 
• (n.) The quality of being sweet or pleasing to the mind; agreeableness; softness; pleasantness; gentleness; urbanity; as, suavity of manners; suavity of language, conversation, or address. • (n.) Sweetness to the taste.
Suav'i·ty noun [ Latin suavitas : confer French suavité .] 1. Sweetness to the taste. [ Obsolete] Sir T. Browne. 2. The quality of being sweet or pleasing to the mind; agreeableness; softness; pleasantness; gentleness; urbanity; as, suavity of manners; 
[n] - smooth and gracious in manner
suaveness noun the quality of being bland and gracious or ingratiating in manner
a suave or smoothly agreeable quality. · suave or courteous actions or manners; amenities.
the quality of being charming and gracious in manner[Intelligent words] the quality of being charming and gracious in manner