ETYM Formerly intime, Latin intimus, a superl. corresponding to the compar. interior: cf. French intime. The form intimate is due to confusion with intimate, v. t. Related to Interior.
1. Thoroughly acquainted with through study or experience; SYN. intimate with, knowledgeable, knowledgeable about.
2. Indicating knowledge of personal details that only a close confidant could have.
3. Involved in a sexual relationship; SYN. sexual.
4. Showing profound and detailed knowledge and understanding as from long study.
5. Closely interconnected or interrelated.