quadruple

verb 0.815

quadruplicate

verb 0.773

fourfold

verb 0.683

quintuple

verb 0.683

quintuplicate

verb 0.670

quadrille

verb 0.659

triplex

verb 0.640

octuple

verb 0.627

quad

verb 0.615

sextuple

verb 0.612

duplex

verb 0.608

triple

verb 0.582

fourth

verb 0.569

triplicate

verb 0.569

heteroduplex

verb 0.560

quat

verb 0.560

multiplex

verb 0.551

quarter

verb 0.540

double

verb 0.535

double-quick

verb 0.533

quilt

verb 0.524

double up

verb 0.515

squad

verb 0.514

tenfold

verb 0.507

flexure

verb 0.502

fibrin

verb 0.502