Definitions of intimate:

• noun:   someone to whom private matters are confided
• verb:   give to understand
• verb:   imply as a possibility
• adjective:   involved in a sexual relationship

  Example: "The intimate (or sexual) relations between husband and wife"

• adjective:   marked by close aquaintance, association, or familiarity

  Example: "Intimate friend"

• adjective:   thoroughly acquainted with through study or experience

  Example: "This girl, so intimate with nature-W.H.Hudson"

• adjective:   having mutual interests or affections; of established friendship

  Example: "Pretending she is on an intimate footing with those she slanders"

• adjective:   having or fostering a warm or friendly atmosphere; especially through smallness and informality

  Example: "An intimate cocktail lounge"

• adjective:   innermost or essential

  Example: "The intimate structure of matter"