private
noun
an enlisted man of the lowest rank in the Army or Marines
“our prisoner was just a private and knew nothing of value”
adjective
confined to particular persons or groups or providing privacy
“a private place”
“private discussions”
Oppositespublicconcerning things deeply private and personal
“intimate correspondence”
“private family matters”
Synonymsintimateconcerning one person exclusively
“we all have individual cars”
“each room has a private bath”
Synonymsindividualnot expressed
“secret (or private) thoughts”
Synonymssecret
Source: WordNet 3.1, Princeton University