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. quintuply adv.
[ F quintuple f. L quintus fifth, after QUADRUPLE ]