The term 'clear, obvious' can be summarized by four crossword solutions: PLAIN (5 letters), EVIDENT (7 letters), APPARENT (8 letters), and duh (3 letters). PLAIN is an adjective meaning simple or ordinary in appearance. EVIDENT is an adjective meaning easily seen or understood. APPARENT is an adjective meaning clearly visible or understood. Finally, duh is an interjection used to express disbelief or sarcasm. All of these words describe something that is clear and obvious.