interment (n.)

• burial
• burying
• clouding
• concealment
• covering
• covertness
• darkening
• deception
• entombment
• hiddenness
• hiding
• inhumation
• invisibility
• masking
• mystification
• occultation
• screening
• secrecy
• secretion
• sepulture
• subterfuge
• uncommunicativeness