avoirdupois bale beef beefiness burden burdening burthen cargo charge charging cross cumber cumbrance difficulty disadvantage drag duty embarrassment encumbrance fatness freight gravity gross weight hamper handicap heaviness heft heftiness impediment impedimenta imposition inconvenience incubus incumbency lading liveweight load loading lumber millstone neat weight net net weight onus oppression overbalance overload overtaxing overweight overweighting pack penalty ponderability ponderosity ponderousness poundage pressure saddling superincumbency surcharge task tax taxing tonnage trouble underweight weight weightiness white elephant