1. the quality or state of being secret, hidden, or conducted in a way that is meant to avoid notice or detection
Usage: abstract noun; formal register

Examples

• The clandestineness of the operation required all participants to maintain strict confidentiality.
• The government condemned the clandestineness of the underground network.
• She appreciated the clandestineness with which the surprise party was organized.
• The clandestineness of their meetings raised suspicion among colleagues.
• He was troubled by the clandestineness of the financial transactions.
• The clandestineness of the resistance movement protected its members from persecution.