Propitious rhymes with:
auspicious, suspicious, ambitious, auspicious, capricious, delicious, expeditious, factitious, fictitious, injudicious, judicious, malicious, nutritious, pernicious, repetitious, seditious, superstitious, surreptitious, suspicious, vicious
Propitious sounds like:
parfaits, peripatetic, perpetuates, pervades, pravda's, privates, privatize, profits, prohibits, prophetess, prophetic, prophets, provides