Ni"ce*ty (?), n.; pl. Niceties (#). [OE. nicet'e foolishness.]
1.
The quality or state of being nice (in any of the senses of that word.).
The miller smiled of her nicety.
Chaucer.
2.
Delicacy or exactness of perception; minuteness of observation or of discrimination; precision.
3.
A delicate expression, act, mode of treatment, distinction, or the like; a minute distinction.
The fineness and niceties of words.
Locke.
To a nicety, with great exactness or accuracy.
© Webster 1913.