Irregular
Irregular adjective - Departing from some accepted standard of what is normal.
Mountainous and irregular are semantically related. In some cases you can use "Mountainous" instead an adjective "Irregular".
Nearby Words: irregularity, irregularly
Mountainous
Mountainous adjective - Unusually large.
Irregular and mountainous are semantically related. Sometimes you can use "Irregular" instead an adjective "Mountainous".
Nearby Words: mountain, mountaineer
Cite this Source
Mountainous and Irregular. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/irregular/mountainous
Irregular & Mountainous. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/irregular/mountainous>.
Mountainous or Irregular. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/irregular/mountainous.
Google Ngram Viewer shows how "irregular" and "mountainous" have occurred on timeline