Cogitate vs. Excogitate

Cogitateverb

(intransitive) To meditate, to ponder, to think deeply.

Excogitateverb

To think over something carefully; to consider fully; cogitate.

Cogitateverb

(transitive) To consider, to devise.

Excogitateverb

To reach as a conclusion through reason or careful thought.

‘After many years of study, he excogitated a solution.’;

Cogitateverb

To engage in continuous thought; to think.

‘He that calleth a thing into his mind, whether by impression or recordation, cogitateth and considereth, and he that employeth the faculty of his fancy also cogitateth.’;

Excogitateverb

To think out; to find out or discover by thinking; to devise; to contrive.

‘This evidence . . . thus excogitated out of the general theory.’;

Cogitateverb

To think over; to plan.

‘He . . . is our witness, how we both day and night, revolving in our minds, did cogitate nothing more than how to satisfy the parts of a good pastor.’;

Excogitateverb

To cogitate.

Cogitateverb

consider carefully and deeply; reflect upon; turn over in one's mind

Excogitateverb

come up with (an idea, plan, explanation, theory, or priciple) after a mental effort;

‘excogitate a way to measure the speed of light’;

Cogitateverb

use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments;

‘I've been thinking all day and getting nowhere’;

Excogitateverb

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’;