Irregular and Longstanding

Opposite meaning words

Irregular adjective - Departing from some accepted standard of what is normal.

Show all Definitions

Longstanding is an antonym for irregular.

Nearby Words: irregularity, irregularly

Longstanding adjective - Having existed for a long time.

Show all Definitions

Irregular is an antonym for longstanding in customary topic.

Cite this Source

Longstanding and Irregular. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/irregular/longstanding

Irregular & Longstanding. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/irregular/longstanding>.

Longstanding or Irregular. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/irregular/longstanding.

Google Ngram Viewer shows how "irregular" and "longstanding" have occurred on timeline