CONSIDER, contemplate, deliberate about, weigh up, consider the pros and cons of, mull over, ponder, reflect on, muse on, ruminate on.
→ think
* * *
consider something carefully
* * *
ˌthink sthˈover derived
to consider sth carefully, especially before reaching a decision
•
He'd like more time to think things over.
•
I've been thinking over what you said.
Useful english dictionary. 2012.