A person who ponders; a thinker.

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

plural of ponderer

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

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

plural of pondering

(rare) Of or pertaining to pondering or deliberation

Pertaining to weight.

plural of ponderability

The fact of having a detectable weight or mass. / Amenability to consideration or thought.