# plane

> English word · Adjective · IPA /pleɪn/ · frequency rank #1,958

## Definitions
1. Of a surface: flat or level.

## Etymology
Etymology tree
Proto-Indo-European *pleth₂-?
Proto-Indo-European *pel-?
Proto-Indo-European *pleh₂-der.
Proto-Indo-European *pleh₂-no-s
Proto-Italic *plānos
Latin plānus
Latin plānumder.
English plane
From Latin plānum (“flat surface”), a noun use of the neuter of plānus (“plain”). The word was introduced in the 17th century to distinguish the geometrical senses from the other senses of plain. Doublet of llano, piano, and plain.

## Easily confused with
- **play** (https://plainspell.com/en/vs/plane-vs-play)
- **Pune** (https://plainspell.com/en/vs/plane-vs-pune)
- **plat** (https://plainspell.com/en/vs/plane-vs-plat)
- **plans** (https://plainspell.com/en/vs/plane-vs-plans)
- **plant** (https://plainspell.com/en/vs/plane-vs-plant)
- **plays** (https://plainspell.com/en/vs/plane-vs-plays)
- **plate** (https://plainspell.com/en/vs/plane-vs-plate)
- **prone** (https://plainspell.com/en/vs/plane-vs-prone)
- **plaza** (https://plainspell.com/en/vs/plane-vs-plaza)
- **prank** (https://plainspell.com/en/vs/plane-vs-prank)
- **plank** (https://plainspell.com/en/vs/plane-vs-plank)
- **Plato** (https://plainspell.com/en/vs/plane-vs-plato)
- **plume** (https://plainspell.com/en/vs/plane-vs-plume)
- **playa** (https://plainspell.com/en/vs/plane-vs-playa)
- **platt** (https://plainspell.com/en/vs/plane-vs-platt)
- **prune** (https://plainspell.com/en/vs/plane-vs-prune)
- **plano** (https://plainspell.com/en/vs/plane-vs-plano)
- **Pliny** (https://plainspell.com/en/vs/plane-vs-pliny)
- **please** (https://plainspell.com/en/vs/plane-vs-please)
- **played** (https://plainspell.com/en/vs/plane-vs-played)

## Common misspellings (7)
`lpane`, `palne`, `plaen`, `planne`, `pllane`, `plnae`, `pplane`

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