Vortex rhymes with:
cortex, cortex, ashtec's, cortex, pantex, semtex, abex, albunex, alpex, ashtec's, avanex, cognex, complex, cortex, culex, dudeck's, forex, gemex, genex, ibex, immunex, index, inlex, koscheck's, micrografx, mondex, moulinex, ovex, pantex, patlex, proctorsilex, purex, quadrex, qualex, quanex, reflex, rolex, rorex, royex, semtex, simex, spinifex, timex, trizec's, uzbeks
Vortex sounds like:
varieties, varity's, verdes, verdi's, verdugo, verduzco, verities, verity's, vertex, vertigo, vertucci, vertz, vibrates, viratek, viridis, virts, virtues, virtuoso, virtuous, vortec