eighth

verb 0.711

sextuple

verb 0.672

quadruple

verb 0.670

quadruplex

verb 0.627

octopus

verb 0.624

quadruplicate

verb 0.622

quintuple

verb 0.601

fourfold

verb 0.585

quintuplicate

verb 0.582

tenfold

verb 0.529

double

verb 0.524

ninth

verb 0.517

double up

verb 0.516