Definition of lumbering:
hard, ponderous, enceinte, overweight, expectant, sullen, laboured, leaden, wakeless, lowering, overgrown, fleshy, toilsome, heavy, heavy-footed, great, blundering, clayey, threatening, big, impenetrable, intemperate, crude, with child, sonorous, laborious, operose, profound, punishing, dense, arduous, weighty, gravid, labored, grave, backbreaking, sound, grievous, weighed down, awkward, grueling, large, gruelling, cloggy.
- "The Terror from the Depths", Sewell Peaslee Wright.
- "The Red Symbol", John Ironside.
- "The Forest Habitat of the University of Kansas Natural History Reservation", Henry S. Fitch Ronald L. McGregor.