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

To wonder, think of deeply. / To consider (something) carefully and thoroughly. / (obsolete) To weigh.

(colloquial) A period of deep thought.

Third-person singular simple present indicative form of ponder

present participle of ponder

An act of rumination or cogitation.

simple past tense and past participle of ponder

(physics) Having a detectable amount of matter; having a measurable mass. / Worthy of note; significant, interesting. / (rare) Heavy; ponderous.

The quality of being ponderous.

A person who ponders; a thinker.