Envelopes rhymes with:
cantaloupes, cantaloupes, allotropes, cantaloupes, gyroscopes, horoscopes, isotopes, microscopes, oscilloscopes, periscopes, stethoscopes, telescope's, telescopes
cantaloupes, cantaloupes, allotropes, cantaloupes, gyroscopes, horoscopes, isotopes, microscopes, oscilloscopes, periscopes, stethoscopes, telescope's, telescopes