Emily Dickinson Lexicon

SMART-NESS, n.

1. The quality of being smart or pungent; poignancy; as, the smartness of pain.
2. Quickness; vigor; as, the smartness of a blow. – Boyle.
3. Liveliness; briskness; vivacity; wittiness; as, the smartness of a reply or of a phrase. – Swift.