Synonyms and related words :
abstruse, beclouded, blind, buried, close, clouded, concealed, covered, covert, eclipsed, hid, hidden, in a cloud, in a fog, in eclipse, in purdah, in the wings, latent, mysterious, obfuscated, obscure, obscured, occult, recondite, secluded, secluse, secret, sequestered, under an eclipse, under cover, under house arrest, under wraps, underground, unknown, wrapped in clouds