Not clear or hard to understand; ambiguous or vague. The instructions were so obscure that no one could follow them.
Not well-known or not famous; relatively unknown. The band played in an obscure venue that few people had heard of.
Not easily seen or noticed; hidden or concealed. The obscure path through the forest was difficult to find without a guide.
Dark or dim; lacking light. Only an obscure lamp illuminated the hallway.