Obscure refers to something that is not easily discovered, understood, or clearly expressed. It can describe something vague, ambiguous, or hidden from view or knowledge. An Obscure concept might require deep study to comprehend, while an Obscure location might be far removed from common travel routes or poorly lit.
The level of obscurity often depends on the context and the perspective of the observer, what might be Obscure to one might be obvious to another.
The word also describes someone who is not well known. .
DIM FOG
BLUR MIST HIDE DARK MASK VEIL
BEDIM BEFOG VAGUE CLOUD APART MURKY SHADE BLEAR
ARCANE DARKEN UNSUNG HIDDEN CLOUDY NONAME OPAQUE REMOTE
BLOTOUT SHADOWY BECLOUD UNKNOWN CONFUSE ECLIPSE UNCLEAR CRYPTIC CONCEAL
ESOTERIC HAZEOVER ISOLATED ABSTRUSE PUZZLING
OVERCLOUD RECONDITE ENIGMATIC AMBIGUOUS
OBNUBILATE OBLITERATE INDISTINCT
UNNOTICEABLE
INSIGNIFICANT
SHROUDEDINMYSTERY