# signup

> English word · Noun · frequency rank #26,963

## Definitions
1. Alternative spelling of sign-up.

## Etymology
Deverbal from sign up.

## Easily confused with
- **sinus** (https://plainspell.com/en/vs/signup-vs-sinus)
- **sign** (https://plainspell.com/en/vs/sign-vs-signup)
- **signs** (https://plainspell.com/en/vs/signs-vs-signup)
- **signed** (https://plainspell.com/en/vs/signed-vs-signup)
- **signal** (https://plainspell.com/en/vs/signal-vs-signup)
- **signor** (https://plainspell.com/en/vs/signor-vs-signup)
- **signer** (https://plainspell.com/en/vs/signer-vs-signup)
- **signet** (https://plainspell.com/en/vs/signet-vs-signup)

## Common misspellings (9)
`isgnup`, `sginup`, `siggnup`, `signnup`, `signpu`, `signupp`, `sigunp`, `singup`, `ssignup`

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