(a.) Dark; gloomy; dusky; tenebrious.

ambiguous amphibological beamless black black as night caliginous dark dark as night dark as pitch darkling darksome dim dusk dusky ebon ebony eclipsed equivocal gloomy murky 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 rayless sibylline starless sunless tenebrious tenebrose uncertain unclear unilluminated unintelligible unlighted unlit vague