# underpin

> English word · Verb · IPA /ˌʌn.dəˈpɪn/ · frequency rank #43,448

## Definitions
1. To support from below with props or masonry.
2. To give support to; to form a basis of; to corroborate.

## Etymology
From under- + pin.

## Easily confused with
- **underlie** (https://plainspell.com/en/vs/underlie-vs-underpin)
- **undermine** (https://plainspell.com/en/vs/undermine-vs-underpin)
- **underline** (https://plainspell.com/en/vs/underline-vs-underpin)
- **underpaid** (https://plainspell.com/en/vs/underpaid-vs-underpin)

## Common misspellings (12)
`nuderpin`, `udnerpin`, `undderpin`, `undeprin`, `underipn`, `underpinn`, `underpni`, `underppin`, `underrpin`, `undrepin`, `unedrpin`, `unnderpin`

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