i Register
In some senses, niceness is marked as obsolete. Watch for register when choosing this word.
noun
Silliness; folly.
Effeminacy; indulgence in soft living or luxuriousness.
He was a good Citizen, of an honest-gentle nature, as are commonly fat and burly men; for so was he: But to speake truely of him, full of ambitious vanitie and remisse nicenesse [translating mollesse].
Shyness; reserve.
Methinks a young create of niceness should be less ready to write to one man, when she is designed to be another's.
Fastidiousness; fine sensitivity.
Pleasantness, especially of behaviour or personality; agreeableness.