Nicety

Part of speech: noun (n.)

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.