courtesy
We have a lot to learn about civility and courteousness from the ancient world.
Our staff consistently receive high ratings from customers for knowledge, efficiency, and courteousness.
She recalled his formal manner and elaborate courteousness.
With great courteousness, he said: "You did awfully well."
Despite his courteousness (and he was very courteous), he was obliged several times to say some harsh words.

SMART Vocabulary: related words and phrases

Polite and respectful
candy coat
candy-coated
chivalric
chivalrous
chivalrously
couth
deferential
deferentially
euphemism for someone/something
euphemistic
hyper-civilized
keep a civil tongue in your headidiom
manner
minced oath
mind/watch your mannersidiom
tactful
tactfully
ultra-civilized
ultra-refined
urbane