Watchman rhymes with:
churchman, churchmen, coachman, deutschman, dutchman, fritchman, henchman, henchmen, hitchman, kretchman, leachman, pitchman, wichman, wichmann
Watchman sounds like:
waitzkin, watchin', watchmen, watkin, watson, watzman, weitzen, weitzman, whitson, widdowson, witkin, woodsman, woodsmen, woodson