penumbra Synonyms

grey area shadow shadiness shade screen periphery outskirt obscurity gloominess gloom dusk doubt demi-monde shroud umbrage clandestineness blurredness arcaneness amorphousness blurriness umbra gray area ambivalence denseness veil dirtiness dimness dimming complexity cloudiness circumlocution caliginosity blackness bewilderment back anonymity ambiguousness ambiguity adumbration complication concealment difficulty depth demimonde deepness darkness darkened dark curiousness covertness