Heavy, massive, weighty. / (figuratively, by extension) Serious, onerous, oppressive. / Clumsy, unwieldy, or slow, especially due to weight. / Dull, boring, tedious; long-winded in expression.

The quality of being ponderous.

In a ponderous manner; very slowly. / With the appearance of great weight.

plural of ponderousness

plural of ponderation

heaviness / mental weighing; deliberation; pondering / physical weighing or balancing

(rare) Of or pertaining to pondering or deliberation

Pertaining to weight.

plural of pondering

(intransitive) To have weight or influence. / To consider; to ponder.