Obfuscous is an adjective that describes someone or something that is difficult to understand or unclear. The antonyms of obfuscous are words that describe clarity, transparency, and straightforwardness. Clear, lucid, unambiguous, and transparent are all opposite in meaning to obfuscous. These words describe a situation or person who is easy to understand and is not shrouded in mystery. Concise, simple, and plain-spoken are additional antonyms for obfuscous, all of which suggest clear and direct communication. Uncomplicated, direct, and sincere are also antonyms of obfuscous, describing a person or thing that is easily comprehensible or straightforward.