quadruply
Adverb
Meaning
To a fourfold quantity; so as to be, or cause to be, quadruple; as, to be quadruply recompensed.
Source: Webster's dictionarySynonyms
fourfold
multiply
quadruple
tetramerous
quadruplication
four times
fourfoldness
quadrupleness
quadruplictiy
fourfolded
fourfolditude
fourfoldly
quadruplexity