intimacy
1. [ noun ] close or warm friendship
Synonyms: familiarity closeness
Examples:

"the absence of fences created a mysterious intimacy in which no one knew privacy"

Related terms: friendliness camaraderie
2. [ noun ] (sexuality) a usually secretive or illicit sexual relationship
Synonyms: affair liaison involvement amour affaire
Related terms: sexual_relationship
3. [ noun ] a feeling of being intimate and belonging together
Synonyms: closeness
Examples:

"their closeness grew as the night wore on"

Related terms: belonging togetherness
Similar spelling:   intima
  intimately
  intimal
  intimate
  indium
  Indian
  intimidate
  intimation
  Indiana
  in_time
  intimidated
  Indianan
  Indiaman