water vapor
"water-vapor" is a 10-letter English headword indexed on PlainSpell.
The verdict
“water vapor” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 11
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Water in a gaseous state, especially when diffused in the atmosphere.
| Property | Value |
|---|---|
| Headword | water vapor |
| Language | English |
| Part of speech | Noun |
| Letters | 11 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “water vapor” sits in English frequency
Rare enough to double-check
water vapor is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
water vapor doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. Our dataset records no confusable match here, which typically means the spelling is too distinctive to be mistaken for another word.
Our source data has no etymology on file for this entry, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is water vapor, spelled W-A-T-E-R- -V-A-P-O-R.
Definition
- 1Water in a gaseous state, especially when diffused in the atmosphere.
- 2Water in a gaseous state, especially when diffused in the atmosphere.
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
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Using “water vapor”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is W-A-T-E-R- -V-A-P-O-R - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.