The article explores 4 main definitions of intimacy to help you build an everlasting intimacy with your significant other. Intimacy : Intimacy refers to a close and deep emotional connection or familiarity between individuals. It involves mutual trust, vulnerability, and a willingness to be open and authentic with one… INTIMACY meaning : 1. a situation in which you have a close friendship or sexual relationship with someone: 2. things…. Learn more. the state of being intimate . a close, familiar, and usually affectionate or loving personal relationship with another person or group. a close association with or detailed knowledge or deep understanding of a place, subject, period of history, etc.. an intimacy with Japan.