Lumberman's rhymes with:
businessman's, goodman's, stockman's, afghanistan's, afghanistans, afghans, alcan's, bedpans, businessman's, c-span's, caftans, callahan's, caltrans, caravans, goodman's, greenspan's, intertrans, lifespans, meehans, pakistan's, rosecrans, rosenkrans, stockman's, tajikistan's, taliban's, talibans, tarzan's