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