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
Nearby Words: irregularity, irregularly
Plane
Plane adjective - Having a surface without bends, breaks, or irregularities.
Usage example: you can do these tracings on any plane surface
Both words in one sentence
- After several attempts, he finally rids of it, only to learn from the plane's crew said plane was so irregular it needed a clown on each wing and, since the clown at the other wing alone wasn't enough to provide safe landing, Johnny had to replace the missing clown.
Source: Episode on a Plane
Cite this Source
Plane and Irregular. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/irregular/plane
Irregular & Plane. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/irregular/plane>.
Plane or Irregular. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/irregular/plane.
Google Ngram Viewer shows how "irregular" and "plane" have occurred on timeline