* νούσιμος (nousímos): This refers to possessing *nous*, which is a more profound kind of intelligence, encompassing understanding, reason, and insight. It's often used in a philosophical context.
* έξυπνος (éxypnos): This translates to "clever" or "quick-witted." It's a more common word for everyday intelligence.
* δεινός (deinós): This word means "skillful," "clever," or even "terrible" (in the sense of awe-inspiring). It implies a mastery of a skill or field, often suggesting a natural talent.
* σοφός (sophós): This means "wise" or "sage." It implies a deeper, more accumulated wisdom gained through experience and learning, rather than just innate intelligence.
The best choice will depend on the context. For general intelligence, έξυπνος is a good option. For a more profound or philosophical intelligence, νούσιμος is more appropriate.