# underside

> English word · Noun · IPA /ˈʌndəˌsaɪd/ · frequency rank #21,396

## Definitions
1. The side that is below or underneath, the bottom.

## Etymology
From under- + side.

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

## Common misspellings (13)
`nuderside`, `udnerside`, `undderside`, `underisde`, `underrside`, `undersdie`, `undersidde`, `undersied`, `undersside`, `undesride`, `undreside`, `unedrside`, `unnderside`

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