Unhitch rhymes with:
hitch, bewitch, bitch, blitch, britsch, ditch, enrich, fitch, fritch, fritsch, fritsche, glitch, hitch, ich, itch, kitch, kitsch, klich, krych, lich, mich, mitch, mitsch, niche, nitsch, nitsche, nycz, piche, pitch, pitsch, rich, riche, ritch, snitch, stich, stitch, switch, triche, tritch, tritsch, twitch, which, wich, witch, zich
Unhitch sounds like:
umetsu, unattach, undock, unit's, unitas, united's, unitek, unites, units, units'