OPPUGN /əˈpjuːn/ ► audio Scrabble 11 Words With Friends 16 Definition verb challenge the accuracy, probity, or propriety of. — synonyms: question, call_into_question Anagrams of OPPUGN popgun See all 20 words you can make from OPPUGN → 6-letter words Words starting with O Words ending with N ← Unscramble different letters