# perpendicular

> English word · Adjective · IPA /ˌpɜː.pənˈdɪk.jə.lə(ɹ)/ · frequency rank #19,935

## Definitions
1. At or forming a right angle (to something).
2. Exactly upright; extending in a straight line toward the centre of the earth, etc.
3. Independent of or irrelevant to each other; orthogonal.

## Etymology
Derived from Middle French perpendiculaire, from Old French perpendiculer, from Latin perpendiculum (“plumb line”).

## Common misspellings (20)
`eprpendicular`, `peprendicular`, `perepndicular`, `perpednicular`, `perpendciular`, `perpenddicular`, `perpendiccular`, `perpendicluar`, `perpendicualr`, `perpendicularr`, `perpendicullar`, `perpendiculra`, `perpendiuclar`, `perpenidcular`, `perpenndicular`, `perpnedicular`, `perppendicular`, `perrpendicular`, `pperpendicular`, `prependicular`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/perpendicular