invisibility (n.)

• burial
• burying
• clouding
• concealment
• covering
• covertness
• darkening
• deception
• evanescence
• hiddenness
• hiding
• impalpability
• imperceptibility
• intangibility
• interment
• masking
• mystification
• occultation
• screening
• secrecy
• secretion
• subterfuge
• uncommunicativeness