Synonyms and related words :
burial, burying, clouding, concealedness, concealment, covering, covering up, covertness, darkening, deception, evanescence, hiddenness, hiding, impalpability, imperceptibility, imponderability, intangibility, interment, masking, mystification, obscuration, obscurement, occultation, putting away, screening, secrecy, secretion, subterfuge, tenuousness, uncommunicativeness