sign up
"sign-up" is a 6-letter English headword indexed on PlainSpell.
The verdict
“sign up” is uncommon English (outside the top frequency list), classed as a verb. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 7
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To add a name to the list of people who are participating in something.
Corpus desk
Index EN-sign-up · sign up · English
sign up · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 7 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "S" thin
- PHOTO-UNK Peer pending
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.
| Property | Value |
|---|---|
| Headword | sign up |
| Language | English |
| Part of speech | Verb |
| Letters | 7 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “sign up” in English
Rare enough to double-check
sign up is uncommon English outside the top frequency list, classed as averb. Rarity is why readers land here mid-draft. 4 senses are on record.
Our edit-distance generator produced no likely misspellings for sign up, since its letter sequence doesn't invite the usual edit-distance slips. It is not paired with a close-neighbour confusable in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.
No documented word history exists for this headword, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is sign up, spelled S-I-G-N- -U-P.
Definition
- 1To add a name to the list of people who are participating in something.
- 2To add one's own name to the list of people who are participating in something (including amateur, but not professional, teams).
- 3To agree to purchase some good or service.
- 4To enlist in the armed forces.
Recorded use
Wiktionary examplesThese source excerpts show how sign up appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
We signed Bob up for kitchen cleanup duty.
Coordinate term: sign in
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.