quadruple Synonyms

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