MnemonicDictionary.com - Meaning of obscure and a memory aid (called Mnemonic) to retain that meaning for long time in our memory. 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 . Obscure can be an adjective, verb, or noun, and it means unknown, unclear, or hidden. Learn how to use obscure in different contexts, synonyms, and pronunciation with examples and translations. Learn the English definition and meaning of Obscure with examples, pronunciation, and translations to enhance your vocabulary.