Sinatra's rhymes with:
artra's, astra's, chitra's, cleopatra's, contras, contras', extras, matra's, orchestra's, orchestras, petras, pietras, spectra's, ultra's
Sinatra's sounds like:
san-andreas, sanders, sanders's, sandrock, saunders, saunders', saunders's, saundra's, schneider's, schneiders, schneiders', schnieders, schnyder's, secondaries, senator's, senators, senators', senders, senters, sentras, sentries, signatories, signatures, smathers, smethers, smithers, smothers, smotrich, snyder's, sonatrach, soundtrack, soundtracks, squanders, summiteers, syndrich, syntrex