[kuh n-ven-shuh-nl]
  1. conforming or adhering to accepted standards, as of conduct or taste: conventional behavior.
  2. pertaining to convention or general agreement; established by general consent or accepted usage; arbitrarily determined: conventional symbols.
  3. ordinary rather than different or original: conventional phraseology.
  4. not using, making, or involving nuclear weapons or energy; nonnuclear: conventional warfare.
  5. Art.
    1. in accordance with an accepted manner, model, or tradition.
    2. (of figurative art) represented in a generalized or simplified manner.
  6. of or relating to a convention, agreement, or compact.
  7. Law. resting on consent, express or implied.
  8. of or relating to a convention or assembly.

Origin of conventional

From the Late Latin word conventiōnālis, dating back to 1575–85. See convention, -al1
Related formscon·ven·tion·al·ist, nouncon·ven·tion·al·ly, adverban·ti·con·ven·tion·al, adjectivean·ti·con·ven·tion·al·ly, adverban·ti·con·ven·tion·al·ist, noun, adjectivenon·con·ven·tion·al, adjectivenon·con·ven·tion·al·ly, adverbqua·si-con·ven·tion·al, adjectivequa·si-con·ven·tion·al·ly, adverbsem·i·con·ven·tion·al, adjectivesem·i·con·ven·tion·al·ly, adverb

Synonyms for conventional

1. See formal1. 2. usual, habitual, customary. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for non-conventional


  1. following the accepted customs and proprieties, esp in a way that lacks originalityconventional habits
  2. established by accepted usage or general agreement
  3. of or relating to a convention or assembly
  4. law based upon the agreement or consent of parties
  5. arts represented in a simplified or generalized way; conventionalized
  6. (of weapons, warfare, etc) not nuclear
  1. bridge another word for convention (def. 7)
Derived Formsconventionally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for non-conventional



late 15c., "of the nature of an agreement," from Late Latin conventionalis "pertaining to convention or agreement," from Latin conventionem (see convention). Meaning "of the nature of a convention" is from 1812, now rare; "established by social convention" is from 1761; that of "following tradition" is from 1831; that of "non-nuclear" is from 1955. Realted: Conventionality; conventionally.

Online Etymology Dictionary, © 2010 Douglas Harper