Quadruply

[kwo-droo-puh l, -druhp-uh l, kwod-roo-puh l] /kwɒˈdru pəl, -ˈdrʌp əl, ˈkwɒd rʊ pəl/

adjective
1.
fourfold; consisting of four parts:
a quadruple alliance.
2.
four times as great.
3.
Music. having four beats to a measure.
noun
4.
a number, amount, etc., four times as great as another.
5.
something, as a series of acrobatic somersaults, made up of four clearly defined parts or stages:
the first trapeze artist to perform a quadruple successfully.
verb (used with or without object), quadrupled, quadrupling.
6.
to make or become four times as great:
To serve 24 people, quadruple the recipe. My savings quadrupled in 20 years.
/ˈkwɒdrʊpəl; kwɒˈdruːpəl/
verb
1.
to multiply by four or increase fourfold
adjective
2.
four times as much or as many; fourfold
3.
consisting of four parts
noun
4.
a quantity or number four times as great as another
v.

late 14c., from Middle French quadrupler, from Late Latin quadruplare “make fourfold, multiply by four,” from Latin quadruplus (adj.) “quadruple, fourfold” (see quadruple (adj.)).
adj.

1550s, from Middle French quadruple (13c.), from Latin quadruplus “fourfold,” from quadri- “four” (see quadru-) + -plus “more” (see plus).