Main entry: chew over, reflect, ponder, think over, speculate, ruminate, mull, mull over, muse, excogitate, contemplate, meditate
Definition: reflect deeply on a subject
Usage: 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
Main entry: theorise, theorize, suppose, hypothecate, hypothesise, hypothesize, speculate, conjecture
Definition: to believe especially on uncertain or tentative grounds
Usage: Scientists supposed that large dinosaurs lived in swamps
Main entry: speculate
Definition: talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion
Usage: We were speculating whether the President had to resign after the scandal
Definition: invest at a risk
Usage: I bought this house not because I want to live in it but to sell it later at a good price, so I am speculating