mindmap root((沉重)) heavy implies that something has greater density or thickness or sometimes power than the average of its kind or class: a ~ child for his age. weighty suggests actual as well as relative heaviness: really ~ parcels are shipped by freight: or implies a momentous or highly important character: pondered ~ matters late into the night. ponderous implies having great weight because of size and massiveness with resulting great inertia and clumsiness: ~ galleons were outmaneuvered by smaller vessels. cumbrous, cumbersome imply heaviness and massive bulkiness that make a thing difficult to grasp, move, carry, or manipulate: abandoned the ~ furniture rather than move it（cumbrous）; the old cameras were ~ and inconvenient（cumbersome）.