(often + in) to take great pleasure in doing something
He delighted in teasing her
to give enjoyment or satisfaction to (somebody)
The pianist delighted the audience with his performance
Middle English deliten via Old French from Latin delectare, from delectus, past part. of delicere to allure, from de- + lacere to allure. The -gh- was added in the 16th cent. by association with light1