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"
come up with (an idea, plan, explanation, theory, or priciple) after a mental effort; "excogitate a way to measure the speed of light"
reflect deeply on a subject
come up with (an idea, plan, explanation, theory, or principle) after a mental effort
