secrets
se-crets
noun
Information deliberately concealed from others; something not generally known.
"She guarded her secrets carefully, revealing nothing to anyone."
adjective
Not openly avowed or generally known.
"They held a secret meeting to discuss the plans."
Thesaurus
Synonyms: closed book, enigma, mystery, secluded, private, privy, unavowed, unacknowledged, arcanum, confidential, covert, concealed