Monrovia rhymes with:
covia, novia, segovia, tovia, wachovia, avia, batavia, bellavia, belvia, bolivia, bonavia, covia, davia, elvia, favia, flavia, fulvia, govea, hevia, jarvia, latvia, livia, moldavia, novia, octavia, olivia, pavia, salvia, saravia, scandinavia, segovia, silvia, sylvia, tovia, trivia, valdivia, wachovia, yugoslavia, zilvia
Monrovia sounds like:
mahariv, maharive, marabou, marfa, marife, marrufo, marv, marva, merv, meyerhoff, minerva, mirv, moerbe, morby, morph, morphew, murff, murph, murphey, murphy