intimacy intimacy /ˈɪntəməsi/

noun

1. () Close or warm friendship  ( closeness , familiarity , intimacy )
   close or warm friendship
    The absence of fences created a mysterious intimacy in which no one knew privacy
   the absence of fences created a mysterious intimacy in which no one knew privacy
   
2. A feeling of being intimate and belonging together  ( closeness , intimacy )
   a feeling of being intimate and belonging together
    Their closeness grew as the night wore on
   their closeness grew as the night wore on
   
3. A usually secretive or illicit sexual relationship  ( affaire , amour , intimacy , affair , involvement , liaison )
   a usually secretive or illicit sexual relationship