IPA: /ˈɪn.tɪ.mə.si/
KK: /ˈɪntɪməsi/
A close and personal relationship between people, often involving emotional connection and trust.
Their intimacy grew stronger as they shared their thoughts and feelings with each other.
Intimacy is formed from "intimus" (meaning innermost or closest) and the suffix "-cy" (indicating a state or condition). The word refers to the state of being close or familiar with someone, often on a personal level.
Think of 'innermost' ('intimus') to remember that 'intimacy' means a close or personal relationship.