Irregular
Irregular adjective - Not having a level or smooth surface.
Usage example: although the moon looks smooth from here, it actually has a very bumpy and irregular surface
Knobbly and irregular are semantically related. in lumpy topic. In some cases you can use "Knobbly" instead an adjective "Irregular".
Nearby Words: irregularity, irregularly
Mutual synonyms
Cite this Source
Knobbly and Irregular. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/irregular/knobbly
Irregular & Knobbly. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/irregular/knobbly>.
Knobbly or Irregular. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/irregular/knobbly.
Google Ngram Viewer shows how "irregular" and "knobbly" have occurred on timeline