Tridex rhymes with:
multidex, rolodex, adaptaplex, adaptec's, ameritech's, ametek's, amex, ampex, annex, apec's, apex, armtek's, audiotex, avtex, aztecs, banamex, berlex, biotechs, bottlenecks, cemex, centex, cineplex, comex, comtrex, crownx, cybersex, cytotechs, datarex, defex, discotheques, duplex, entex, equitex, eurochecks, eyetech's, fanech's, finex, gatx, gendrisek's, genentech's, gtech's, hyponex, inmex, intex, kaisertech's, latex, medarex, mediplex, memorex, memtec's, metex, methanex, metroplex, middlesex, multidex, multiplex, natec's, neorx, nymex, nynex, opec's, oraflex, paychecks, paychex, pemex, pewex, pillowtex, playtex, portec's, prentnieks, qintex, railtex, rednecks, rolodex, roughnecks, scitex, simplex, starplex, steinbeck's, stratoflex, superx, symantec's, syntex, teleflex, telex, telmex, tenrecs, timeplex, trintex, truex, turtlenecks, unisex, ventritex, vertex, videotex, visx, wedtech's, westtech's
Tridex sounds like:
tarots, tarts, tertius, tetrads, third's, thirds, thirties, thirty's, thordis, thortec, threads, threats, throats, thwarts, tirades, tortoise, tortoises, torts, tortuous, tourette's, touretzky, towards, trade's, trades, traits, treads, treaties, treatise, treatises, treats, treaty's, triad's, triads, tritch, trites, tritsch, tritz, trots, trotsky, trout's, trudge, trudges, truths, tryouts, turrets, twardowski, twothirds