piquancy

adjective

1. agreeably pungent or sharp in taste or flavor; pleasantly biting or tart: a piquant aspic.
2. agreeably stimulating, interesting, or attractive: a piquant glance.
3. of an interestingly provocative or lively character: a piquant wit.
4. Archaic. sharp or stinging, especially to the feelings.

adjective

1. having an agreeably pungent or tart taste
2. lively or stimulating to the mind

n.1660s, from piquant + -cy. adj.1520s, from Middle French piquant “pricking, stimulating, irritating,” present participle of piquer “to prick, sting, nettle” (see pike (n.2)).