intimate

in‧ti‧mate

1

restaurant/meal/place

private and friendly so that you feel comfortable:

the intimate atmosphere of a country pub

an intimate meal for two

The collection has been moved from its intimate setting to the British Museum.

2

friends

having an extremely close friendship:

an intimate friend of Picasso's

an intimate relationship

She's on intimate terms with people in government.

3

 intimate knowledge of something

very detailed knowledge of something as a result of careful study or a lot of experience:

his intimate knowledge of the coal industry

4

private

relating to very private or personal matters:

the publication of intimate details of their affair

5

sex

formal

a) relating to sex:

The virus can only be transmitted through intimate contact.

b) 

be intimate with somebody

to have sex with someone

6

 intimate link/connection etc

a very close connection between two things:

the intimate connection between physical and mental health

—intimately adverb:

The two aspects are intimately connected.

I am intimately acquainted with the state of my bank account.

I have an intimate acquaintance with him.