The two crossword solutions for the term 'very close friend' are 'INTIMATE' and 'alter ego'. INTIMATE is an adjective that describes a close, familiar, and usually affectionate relationship between two people. It is often used to describe a romantic relationship, but can also be used to describe a strong bond between friends. An alter ego is a second self, or a different version of oneself. It is often used to describe a person's public persona, or the way they present themselves to the world.