Aptitudes rhymes with:
attitudes, latitudes, attitudes, latitudes, longitudes, magnitudes, altitudes, attitudes, etudes, latitudes, longitudes, magnitudes, platitudes
Aptitudes sounds like:
abadaka, abates, abbott's, abides, abitz, about's, abts, abuts, apathetic, apatites, aphids, apodaca, apotheosis, appetites, avoids, avtex, avtex's