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WORDNET DICTIONARY
OXFORD DICTIONARY
THESAURUS

WORDNET DICTIONARY

Adjective unilluminated has 1 sense

• unilluminated(s = adj.all) lightless, unlighted, unlit - without illumination; "came up the lightless stairs"; "the unilluminated side of Mars"; "through dark unlighted (or unlit) streets"

OXFORD DICTIONARY

THESAURUS

unilluminated

awkward, beamless, black, black as night, blankminded, caliginous, callow, dark, dark as night, dark as pitch, darkling, darksome, dim, dumb, dusk, dusky, ebon, ebony, eclipsed, empty, empty-headed, gauche, gloomy, green, groping, ignorant, inane, inexperienced, innocent, know-nothing, murky, naive, nescient, night-black, night-clad, night-cloaked, night-dark, night-enshrouded, night-filled, night-mantled, night-veiled, obfuscated, obscure, obscured, occulted, pitch-black, pitch-dark, pitchy, raw, rayless, simple, starless, strange to, sunless, tenebrious, tenebrose, tenebrous, tentative, unacquainted, unapprized, uncomprehending, unconversant, unenlightened, unfamiliar, uninformed, uninitiated, unintelligent, unknowing, unlighted, unlit, unposted, unripe, unsure, unversed, vacuous

For further exploring for "unilluminated" in Webster Dictionary Online