How to sign: 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";
Similiar / Same: think over, meditate, ponder, muse, mull, mull over, excogitate, ruminate, reflect, speculate, contemplate
Categories: cerebrate, cogitate, think
Within this category: bethink, cogitate, introspect, premeditate, puzzle, study, theologize, wonder