How do you say intelligent?

There are many ways to say "intelligent," depending on the context and nuance you want to convey. Here are some options:

Formal:

* Intelligent

* Bright

* Clever

* Sharp

* Astute

* Wise

* Learned

* Erudite

* Sophisticated

* Insightful

Informal:

* Smart

* Brainy

* Quick-witted

* Sharp as a tack

* Savvy

* Perceptive

* Cunning

More specific:

* Gifted (for someone with exceptional abilities)

* Brilliant (for someone with extraordinary intellect)

* Ingenious (for someone who is innovative and resourceful)

* Scholarly (for someone who is knowledgeable and academic)

Figurative:

* A mind like a steel trap

* A quick study

* Sharp as a whip

* A genius

The best way to choose the right word depends on the specific situation and the level of formality you need.