niceness

Short definition from Wiktionary

Noun

1. 1
   Silliness; folly.
2. 2
   Effeminacy; indulgence in soft living or luxuriousness.
3. 3
   Shyness; reserve.
4. 4
   Fastidiousness; fine sensitivity.
5. 5
   Pleasantness, especially of behaviour or personality; agreeableness.
6. 6
   A value determining how much processor time to concede to a running process. (See also nice (verb), renice.)