Intrex rhymes with:
syntrex, centrex, syntrex, centrex, syntrex, barracks, centrex, horrocks, microx, norex, serex, syntrex, terex, verex
Intrex sounds like:
imitators, indoors, initiators, interco, interco's, interiors, intersec, intricacies, intricacy, intrigue, intrigues, intros