The word "seal secrecy" refers to the act of keeping something confidential and hidden from public knowledge. Synonyms for this term include maintaining privacy, safeguarding discretion, preserving confidentiality, securing confidentiality, protecting privacy, and ensuring non-disclosure. Other related synonyms include maintaining confidentiality, upholding secrecy, securing secrecy, respecting confidentiality and keeping something hush-hush. In any case, the idea is to prevent information from being leaked or disclosed to unauthorized persons. By using these synonyms, one expresses a desire to maintain the integrity of a sensitive subject while ensuring that it remains hidden from people who do not have clearance.