Propound rhymes with:
expound, impound, lb, pound, abound, aground, around, astound, bound, browned, confound, crowned, downed, drowned, expound, found, frowned, ground, hound, impound, inbound, lb, mound, newfound, pound, profound, rebound, redound, renowned, resound, round, sound, surround, ultrasound, unbound, unsound, unwound, wound
Propound sounds like:
perfumed, pierpoint, pierpont, pierrepont, prepayment, prevent, prevented, profanity, profound, proponent, propounded, provant