CONCEIT, idea, fancy, witty invention, conception, opinion.
CONCEIT, apprehend.
CONCEITED, fancifully, ingeniously devised or conceived; possessed of intelligence, witty, ingenious (hence well conceited, etc.); disposed to joke; of opinion, possessed of an idea.
CONCEIVE, understand.
CONCENT, harmony, agreement.
CONCLUDE, infer, prove.
CONCOCT, assimilate, digest.
CONDEN'T, probably conducted.
CONDUCT, escort, conductor.
CONEY-CATCH, cheat.