Here's what rhymes with mousy.
mousey Words that almost rhyme with mousy
mouthy lousy drowsy frowsy houri hourly dowry downy gouty rowdy bouncy cowrie dowdy howdy jowly towhee townie townee county loudly bounty cloudy sourly brownie grouchy housefly dourly frowzy slouchy grouchier proudly soundly foundry roundly stoutly debauchee flouncy devoutly unsoundly scroungy paramountcy profoundly