Duplex rhymes with:
adaptaplex, cineplex, mediplex, metroplex, multiplex, simplex, starplex, timeplex, adaptaplex, berlex, cineplex, mediplex, metroplex, multiplex, oraflex, simplex, starplex, stratoflex, teleflex, telex, timeplex
Duplex sounds like:
dabbles, davalos, debelak, debellis, deblasio, deblock, deblois, defalco, defelice, depaolis, deploys, deval's, devil's, devilish, deville's, devils, devils', diblasi, diblasio, difalco, difelice, divulge, doubles, duplessis