meditate
/ˈme-də-ˌtāt/
verb
to engage in contemplation or reflection
to engage in mental exercise (such as concentration on one's breathing or repetition of a mantra) for the purpose of reaching a heightened level of spiritual awareness
to focus one's thoughts on : reflect on or ponder over
He meditated long and hard before announcing his decision.
phrasal verb
to think about (something) carefully
She meditated on whether or not to return to school.