noun
obscurity, concealment, camouflage, indistinctness, imperceptibility, invisibleness, indefiniteness, seclusion, latency, cloudiness, haziness, fogginess, mistiness, duskiness, nebulousness, darkness, gloominess, gloom, insubstantiality, incorporeality, immateriality, intangibility, disappearance, vagueness, indefiniteness, indiscernibility, indistinguishability, unnoticeability.
