Operant rhymes with:
aspirant, accelerant, afferent, aspirant, beligerent, belligerent, cormorant, deodorant, different, efferent, expectorant, exuberant, ignorant, intolerant, irreverent, itinerant, odorant, refrigerant, reverent, tolerant
Operant sounds like:
o'briant, o'bryant, obriant, obryant, operandi, overnite