Perpendicular and Prone

Perpendicular

Perpendicular adjective - Rising straight up.

Prone is an antonym for perpendicular in at right angles to topic.

Prone

Prone adjective - Having a tendency to be or act in a certain way.

Perpendicular is an antonym for prone in face down topic.
Cite this Source
Prone and Perpendicular. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/perpendicular/prone
Perpendicular & Prone. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/perpendicular/prone>.
Prone or Perpendicular. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/perpendicular/prone.
Google Ngram Viewer shows how "perpendicular" and "prone" have occurred on timeline