Quenches rhymes with:
clenches, drenches, branches, bunches, clenches, clinches, drenches, inches, inches', launches, ranches
Quenches sounds like:
qing, qmax, quaking, quanex, quang, quashing, queasiness, queen's, queens, queensway, quench, queuing, quickening, quickens, quickness, quina's, quince, quincey, quincy, quincy's, quinn's, quinoco, quinones, quinonez, quizzing