Obscure means unclear, indistinct, or hidden. It can also refer to something or someone that is unknown or inconspicuous. Find out the origin, usage, and examples of obscure and its synonyms. If something is obscure , it's vague and hard to see. Be careful if you're driving in heavy rain — the painted lines can be obscure . The meaning of OBSCURE is dark, dim. How to use obscure in a sentence. Synonym Discussion of Obscure. obscure meaning , definition , what is obscure : not well known and usually not very impo...: Learn more.