Metroplexes rhymes with:
cineplex's, cineplex's, telex's, annexes, apex's, avtex's, cineplex's, comex's, nynex's, telex's, telmex's
Metroplexes sounds like:
metroplex, metropol's, metropolis
cineplex's, cineplex's, telex's, annexes, apex's, avtex's, cineplex's, comex's, nynex's, telex's, telmex's
metroplex, metropol's, metropolis