adj., n., & v.
--adj.
1. fivefold; consisting of five parts.
2 involving five parties.
3 (of time in music) having five beats in a bar.
--n. a fivefold number or amount.
--v.tr. & intr. multiply by five; increase fivefold.
Derivatives:
quintuply adv.
Etymology: F quintuple f. L quintus fifth, after QUADRUPLE