check-in

noun

"check-in" is a 7-letter English headword indexed on PlainSpell.

The verdict

“check-in” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The act of checking in at a hotel, airport, etc.

Corpus desk

Index EN-check-in · check-in · English

check-in · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-2 2 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "C" 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.

Key facts for check-in
PropertyValue
Headwordcheck-in
LanguageEnglish
Part of speechNoun
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “check-in” in English

check-infalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

check-in is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 3 senses are on record.

check-in doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. This entry stands alone in our confusable dataset, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: Deverbal from check in. The correct English form is check-in, spelled C-H-E-C-K---I-N.

Definition

  1. 1
    The act of checking in at a hotel, airport, etc.
  2. 2
    The submission of source code or other material to a source control repository.
  3. 3
    The act of contacting another person in order to keep them informed of one's situation.

Recorded use

Wiktionary examples

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

  1. The hotel never charges for a late check-out or for an early check-in . . .
  2. The implication was that Ms Purkiss had been stereotyped by the check-in staff as ‘foreign'.

Etymology

Deverbal from check in.

Synonyms

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.

Frequently Asked Questions

How do you spell "check-in"?
"check-in" is spelled C-H-E-C-K---I-N.
What does "check-in" mean?
As a noun, "check-in" means: The act of checking in at a hotel, airport, etc.
What is the origin of the word "check-in"?
Deverbal from check in. 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.

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

Source: FrequencyWords open word-frequency list