# underpinning

> English word · Noun · frequency rank #33,896

## Definitions
1. A support or foundation, especially as a structure of masonry that supports a wall.
2. A basis for something.
3. The lower body or legs.

## Easily confused with
- **undermining** (https://plainspell.com/en/vs/undermining-vs-underpinning)
- **underlining** (https://plainspell.com/en/vs/underlining-vs-underpinning)

## Common misspellings (17)
`nuderpinning`, `udnerpinning`, `undderpinning`, `undeprinning`, `underipnning`, `underpining`, `underpininng`, `underpinnign`, `underpinningg`, `underpinninng`, `underpinnnig`, `underpnining`, `underppinning`, `underrpinning`, `undrepinning`, `unedrpinning`, `unnderpinning`

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