quadruple Synonyms

quadruplicate quartet four-fold quartette quadruplex quadruplet fourfold quaternion quaternate quaternary quadripartition quadruply quadruplication quaternity tetrad tetradic four times tetraploid quadrumvirate 4th quatern foursome tetramerous tetralogy increase fourfold quadruplicated estimate quad four-way fourthly four determine declining constant biquadratic biquadrate quadrable quadrible quadrupling quadrupled quadrumanous quadrivium quadrivial quadripartite quadrinomial quadrigeminal quadriennial accumulative