private as in confined to particular persons or groups or providing privacy
"a private place"
"a private club"
"a private secretary"
"the former President is now a private citizen"
"public figures struggle to maintain a private life"
private as in concerning things deeply private and personal
"private family matters"
intimatesomeone to whom private matters are confided ; give to understand; imply as a possibility; marked by close acquaintance, association, or familiarity; concerning things deeply private and personal; having or fostering a warm or friendly and informal atmosphere; having mutual interests or affections; used euphemistically to refer to the genitals; involved in a sexual relationship; innermost or essential; thoroughly acquainted through study or experience
private as in concerning one person exclusively
"we all have individual cars"
"each room has a private bath"
private as in not expressed
"secret (or private) thoughts"
secretsomething that should remain hidden from others (especially information that is not to be passed on); information known only to a special group; something that baffles understanding and cannot be explained; not open or public; conducted with or marked by hidden aims or methods; not openly made known; communicated covertly; not expressed; designed to elude detection; hidden from general view or use; (of information) given in confidence or in secret; indulging only covertly; having an import not apparent to the senses nor obvious to the intelligence; the next to highest level of official classification for documents