What is intelligence?

When I was growing up I did get a number of complements as an intelligent boy?

  As I am growing older I am asking this question  more and more what is intelligence?

also  from the various  theories  it seems like  I lack in  emotional intelligence.

" "While your IQ, which is sort of language logic, will get you behind the desk, if you don’t know how to deal with( deceitful,dishonest) people, if you don't know how to read yourself, you’re going to end up just staying at that desk forever or eventually being asked to make room for somebody who does have social or emotional intelligence.""

Of Course watching the  American Presidential debates causes one to question if there is anything called intelligence.but any way
From google ( is it decreasing or increasing our intelligence/)

in·tel·li·gence

inˈteləjəns/

noun

1. 1.

   the ability to acquire and apply knowledge and skills.

   "an eminent man of great intelligence"

   synonyms:

   intellectual capacity, mental capacity, intellect, mind, brain(s) , IQ, brainpower, judgment,reasoning, understanding, comprehension; More

2. Brain system behind general intelligence discovered

3. 
   

   Neuroscientists have mapped the brain structures that affect general intelligence. The study adds new insight to a highly controversial question: what is intelligence, and how can we measure it?
4.