1 day ago · The meaning of UNCONVENTIONAL is not conventional : not bound by or in accordance with convention : being out of the ordinary. How to use unconventional in a sentence. It is capable of producing highly unconventional designs that are perfectly rational, and often better adapted to their purpose than the conventional solution. To be unconventional is to act, dress, speak, or otherwise exist out of the bounds of cultural norms. If you eat cheeseburgers for breakfast, that's somewhat unconventional. Anything that's nonconformist … unconventional (ˌʌnkənˈvɛnʃənəl) adj not conforming to accepted rules or standards ˌunconˌventionˈality n Find 90 different ways to say UNCONVENTIONAL, along with antonyms, related words, and example sentences at Thesaurus.com. To be unconventional is to act, dress, speak, or otherwise exist out of the bounds of cultural norms. If you eat cheeseburgers for breakfast, that's somewhat unconventional. Anything that's nonconformist … Definition of unconventional adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Find 2,584 synonyms for unconventional and other similar words that you can use instead based on 9 separate contexts from our thesaurus.