nonstandard

[ non-stan-derd ]
/ ˈnɒnˈstæn dərd /

adjective

not conforming in pronunciation, grammar, vocabulary, etc., to the usage characteristic of and considered acceptable by most educated native speakers; lacking in social prestige or regionally or socially limited in use: a nonstandard dialect; nonstandard English.Compare standard(def 27).
Mathematics. of or relating to a generalized system of numbers that includes the real numbers but also includes infinite and infinitesimal numbers: nonstandard analysis.

Origin of nonstandard

First recorded in 1920–25; non- + standard

usage note for nonstandard

A term labeled Nonstandard in this dictionary is one that is thought to be characteristic of the speech of persons with little education—a term that is often regarded as a marker of low social status.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for nonstandard

  • Alternatively, the cancer could have spread during the nine months that Jobs was experimenting with nonstandard therapies.

    Jobs’s Unorthodox Treatment|Sharon Begley|October 6, 2011|DAILY BEAST
  • Oh, you mean riding public transit in a nonstandard way isn't a crime?

    Little Brother|Cory Doctorow

British Dictionary definitions for nonstandard

nonstandard
/ (nɒnˈstændəd) /

adjective

denoting or characterized by idiom, vocabulary, etc, that is not regarded as correct and acceptable by educated native speakers of a language; not standard
deviating from a given standard
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