Synonyms and related words :
blackening, blocking the light, burial, burying, clouding, concealedness, concealment, covering, covering up, covertness, deception, denigration, dimming, eclipsing, extinguishment, hiddenness, hiding, interment, invisibility, masking, melanization, mystification, nigrification, obfuscation, obnubilation, obscuration, obscurement, obumbration, occultation, occulting, overcast, overclouding, overshading, overshadowing, overshadowment, putting away, screening, secrecy, secretion, shading, shadowing, smirch, smirching, smudge, smudging, smut, smutch, smutching, subterfuge, uncommunicativeness,