Search and compare thousands of words and phrases in American Sign Language (ASL). The largest collection online.
How to sign: 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";
How to sign: come up with (an idea, plan, explanation, theory, or priciple) after a mental effort
"excogitate a way to measure the speed of light";