signup

noun

By · According to Wiktionary data (CC BY-SA) ·

"signup" is a 6-letter English headword indexed on PlainSpell.

The verdict

“signup” has 9 generated spelling variants in the English index at frequency #26,963. The variants make it a useful spelling check.

#26,963
frequency rank, English
6,566
“S” headwords
9
tracked misspellings
8
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Alternative spelling of sign-up.

Corpus desk

Index EN-signup · signup · English

signup · rank #26,963 · 9 variants · 8 confusables

  • FREQ-MID #26,963
  • LEN-LONG 6 letters
  • VOW-2 2 vowels
  • CONFUS-MID 8 pairs
  • VAR-MID 9 variants
  • BOOK-DENSE 6,566
  • PHOTO-FINISH sie

Nearest frequency peer: sie (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Rank peers near misspelling magnet “signup”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “signup” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

signup vs sinus
67% similar
signup vs sign
67% similar
signup vs signs
67% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for signup
PropertyValue
Headwordsignup
LanguageEnglish
Part of speechNoun
Letters6
Frequency rank#26,963
Misspellings tracked9
Confusable pairs8
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “signup”

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).signuplands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “sie” (#26,962), “skirmish” (#26,964), “shuffling” (#26,961). Among 6,566 “S” headwords, “signup” is #26,963. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 9 spelling variants around signup, anoun. Corpus frequency is #26,963 among 6,566 “S” headwords. Dominant gloss: "Alternative spelling of sign-up.".

Our generated misspelling index lists 9 likely wrong-spelling variants for signup, with forms such as "isgnup", "sginup", and "siggnup". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 8 confusable-pair relationships, "sinus", "sign", "signs", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: Deverbal from sign up. The correct English form is signup, spelled S-I-G-N-U-P.

Definition

  1. 1
    Alternative spelling of sign-up.

Recorded use

Wiktionary example

These source excerpts show how signup appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. The deal was a critical part of filling loopholes in Microsoft's distribution strategy, ensuring that IE and not Netscape had widespread distribution to new users with new PCs and to existing PC users new to the Internet at the time of ISP signups.

Etymology

Deverbal from sign up.

Common misspellings

Also misspelled as:

  • isgnup
  • sginup
  • siggnup
  • signnup
  • signpu
  • signupp
  • sigunp
  • singup
  • ssignup

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of signup - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

isgnup2sginup2siggnup1signnup1signpu2signupp1sigunp2singup2
Edit distance from "signup"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "signup"?
"signup" is spelled S-I-G-N-U-P.
What does "signup" mean?
As a noun, "signup" means: Alternative spelling of sign-up.
What words are commonly confused with "signup"?
"signup" is commonly confused with "sinus", "sign", "signs". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What is the origin of the word "signup"?
Deverbal from sign up. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "signup", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

slough#26,965soared#26,967saucer#26,955Rudolf#26,948

Similar misspelling depth

Headwords with a similar count of attested misspellings (9 here; floor ≥5).

succumb9 variantsringer9 variantsrequiem9 variantspurify9 variants

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list