Sleepwalk rhymes with:
boardwalk, jaywalk, kowalke, norwalk, sidewalk, airlock, blackhawk, boardwalk, cornstalk, echohawk, gamecock, goshawk, honestok, jaywalk, kowalke, marschalk, mohawk, nighthawk, norwalk, poppycock, seahawk, sidewalk, skyhawk, smalltalk, tomahawk, witbrock
Sleepwalk sounds like:
salables, scalpels, selfless, sleepless, sleeveless, syllables