Origin: Latin suffix -ate
Speculate has 5 different meanings across 1 category:
to believe especially on uncertain or tentative grounds
"Scientists supposed that large dinosaurs lived in swamps"
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
"We were speculating whether the President had to resign after the scandal"
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"
To think, meditate or reflect on a subject; to consider, to deliberate or cogitate.
"Before making his final decision, he sat quietly in the garden to speculate on how each option might affect their future together."