quadruple
qua-dru-ple
adjective
Consisting of four parts or four times the usual quantity or size.
"He performed a quadruple somersault perfectly."
noun
An amount or number that is four times as large as another.
"Scoring a quadruple is rare in football."
verb
To increase something so it becomes four times its original size or amount.
"They plan to quadruple their profits next year."
Thesaurus
Synonyms: quartet, quartette, quadruplet, fourfold, multiple, four-fold, quadruplicate, quadruplex