|Origin:||ponderer 'to weigh', from Latin ponderare, from pondus 'weight'|
pon‧der [intransitive and transitive]
to spend time thinking carefully and seriously about a problem, a difficult question, or something that has happened [= consider]:
He continued to ponder the problem as he walked home.
The university board is still pondering over the matter.
Jay stood still for a moment, pondering whether to go or not.