*SET-U

English word origin

Etymology of vapor

Etymology tree Proto-Italic *kwapōs Latin vapor Old French vapeurder. Old French vaporbor. Middle English vapour English vapor From Middle English vapour, from Anglo-Norman vapour, Old French vapor, from Latin vapor (“st

1 source sectionExtended source reportWiktionary original ↗
In this entry · 1 source sections

The source etymologies

Wiktionary via Kaikki / Wiktextract

The source reports below are imported and unreviewed by *SET-U. Separate numbered origins and differing source variants are preserved; agreement within this extraction is not independent corroboration.

Unnumbered source etymology

Original entry ↗
noun

Cloudy diffused matter such as mist, steam or fumes suspended in the air. · The gaseous state of a substance that is normally a solid or liquid. · Something insubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting. · Any medicinal agent designed for administration in the form of inhaled vapour.

verb

To become vapor; to be emitted or circulated as vapor. · To turn into vapor. · To emit vapor or fumes. · To use insubstantial language; to boast or bluster.

Selected source glosses provide context, not a complete modern definition inventory

Etymology tree Proto-Italic *kwapōs Latin vapor Old French vapeurder. Old French vaporbor. Middle English vapour English vapor From Middle English vapour, from Anglo-Norman vapour, Old French vapor, from Latin vapor (“steam, heat”).

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

  • Inherited-form mentionvapourenm
  • Derivation mentionvaporfro
  • Derivation mentionvaporla · steam, heat

This page abbreviates 3 auxiliary source items. The etymology narrative is not shortened. Omission counts are available in the audit fields below; consult the original for complete auxiliary material.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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        "2": ":inh",
        "3": "enm:vapour<ety:bor<fro:vapor<ety:der<fro:vapeur<ety:inh<la:vapor>>>>>>",
        "tree": "1"
      },
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        "The gaseous state of a substance that is normally a solid or liquid.",
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Where this record stops

This page does not supply an independently verified sound-change sequence, first-use manuscript or complete family tree unless a cited analysis explicitly establishes one. Missing detail here is a limit of this record—not a claim that humanity knows nothing more.

An older meaning does not determine what a word must mean today. Follow the sources, preserve disagreements, and keep ancestry separate from interpretation.

Contribute located evidence for vapor →

Source and snapshot

Imported from Wiktionary contributors; extracted by Tatu Ylonen / Wiktextract / Kaikki.org. Selected fields are reformatted and grouped; wording, source identity and etymology sections are retained. CC-BY-SA-4.0 applies to the imported source material.

Dump: 2026-10-01 · Extracted: 2026-10-30. These are snapshot dates, not the word’s first attestation or the page’s revision date.

Source entry and bibliography ↗Wiktionary revision history ↗Acquisition and rights ledger
Machine-source provenance
Source SHA-256
5ff2c072f8099f2d2ce484bd6957bf179f046d2ad37bc36555edf8bb84cb5291
Import run
73216b9a9b78ed3830994bf853103716f5a4dc57099e371e9f8fdc468facca26
Permanent entry ID
w-dmFwb3I