Crossword clues for the word: OSTENTATIOUS The word OSTENTATIOUS has appeared as an answer to at least 3 crossword clues on different crossword puzzles. Crossword clues for OSTENTATIOUS Showing 1 to 3 of 3 results Clue(s) Extravagant, very large marquee, say, at Oxford University is overwhelming Rich and showy Showy