| v. t. | 1. | To think out; to find out or discover by thinking; to devise; to contrive. |
| v. i. | 1. | To cogitate. |
| Verb | 1. | excogitate - come up with (an idea, plan, explanation, theory, or priciple) after a mental effort; "excogitate a way to measure the speed of light" |
| 2. | excogitate - 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" |