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.

UNCONVENTIONAL definition: not conventional; not bound by or conforming to convention, rule, or precedent; free from conventionality. See examples of unconventional used in a sentence.

Definition of unconventional adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

If you describe a person or their attitude or behavior as unconventional, you mean that they do not behave in the same way as most other people in their society.

unconventional (ˌʌnkənˈvɛnʃənəl) adj not conforming to accepted rules or standards ˌunconˌventionˈality n

WordReference Random House Unabridged Dictionary of American English © 2025 un•con•ven•tion•al (un′kən ven′ shə nl), adj. not conventional; not bound by or conforming to convention, rule, or …