n.
1.
Intellect, understanding, mind, sense, reason, genius, mental power, intellectual faculties, thinking principle, mother-~.
2.
Quick perception ( as of partial resemblance in things mostly unlike ), keen discernment, acumen, penetration, discernment, insight.
3.
Facetiousness, humor, fun, drollery, waggery, waggishness, jocularity, sparkle, readiness, quickness at repartee, Attic salt.
4.
Humorist, wag, bright man, bright woman, bright person.