Irregular
Irregular adjective - Departing from some accepted standard of what is normal.
Not on and irregular are semantically related. In some cases you can use "Not on" instead an adjective "Irregular". informal substitute
Nearby Words: irregularity, irregularly
Not on
Mutual synonyms
Cite this Source
Not on and Irregular. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/irregular/not_on
Irregular & Not on. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/irregular/not_on>.
Not on or Irregular. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/irregular/not_on.
Google Ngram Viewer shows how "irregular" and "not on" have occurred on timeline