Osby rhymes with:
crosbey, asby, battersby, bisbee, bixby, busbey, clasby, crosbey, dansby, frisbee, frisbie, frisby, gatsby, glasby, goolsby, goosby, grisby, husby, ingalsbe, lisby, lusby, maulsby, maultsby, mosby, nasby, nesby, oglesby, owensby, presby, saxby, silsby, thursby, weathersby, wisby
Osby sounds like:
o'keefe, o'keeffe, occupy, ojibwa, okabe, okeechobee, okeefe, okeeffe, okpo, okubo, oshaf, ossify, ouseba, oxbow