reflect deeply on a subject; "I mulled over the events of the afternoon"; "philosophers have speculated on the question of God for thousands of years"; "The scientist must stop to observe and start to excogitate"
If you ponder something, you think about it carefully. I found myself constantly pondering the question: `How could anyone do these things?' The Prime Minister pondered on when to go to the polls I'm continually pondering how to improve the team. to spend time thinking carefully and seriously about a problem, a difficult question, or something that has happened = consider (ponderer , from ponderare, from pondus )