Informal
Informal adjective - Used in or suitable for speech and not formal writing.
Usage example: the use of informal language in a scholarly article is really inappropriate
Nongrammatical and informal are semantically related. In some cases you can use "Nongrammatical" instead an adjective "Informal".
Nongrammatical
Informal and nongrammatical are semantically related. You can use "Informal" instead an adjective "Nongrammatical".
Mutual synonyms
Cite this Source
Nongrammatical and Informal. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/informal/nongrammatical
Informal & Nongrammatical. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/informal/nongrammatical>.
Nongrammatical or Informal. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/informal/nongrammatical.
Google Ngram Viewer shows how "informal" and "nongrammatical" have occurred on timeline