*SET-U

English word origin

Etymology of -osity

From Middle English -ouste, from Old French -ouseté, from Latin -ōsitās; later modified to the current form. It is equivalent to -ose or -ous + -ity.

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 ↗
suffix

Forming nouns, usually abstract, and usually from adjectives in -ous or -ose. · Forming nouns from other adjectives for humorous effect.

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

From Middle English -ouste, from Old French -ouseté, from Latin -ōsitās; later modified to the current form. It is equivalent to -ose or -ous + -ity.

Relationships mentioned by the source

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

Inspect preserved source fields

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

{
  "templates": [
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "-ouste"
      },
      "expansion": "Middle English -ouste"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "fro",
        "3": "-ouseté"
      },
      "expansion": "Old French -ouseté"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "la",
        "3": "-ōsitās"
      },
      "expansion": "Latin -ōsitās"
    },
    {
      "name": "suf",
      "args": {
        "1": "en",
        "2": "-ous#Suffix",
        "3": "-ity#Suffix"
      },
      "expansion": "-ous + -ity"
    }
  ],
  "links": [
    [
      "-ouste",
      "-ouste#Middle_English"
    ],
    [
      "-ouseté",
      "-ouseté#Old_French"
    ],
    [
      "-ōsitās",
      "-ositas#Latin"
    ],
    [
      "-ose",
      "-ose#English:_-ful"
    ],
    [
      "-ous",
      "-ous#Suffix"
    ],
    [
      "-ity",
      "-ity#Suffix"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "suffix",
      "glosses": [
        "Forming nouns, usually abstract, and usually from adjectives in -ous or -ose.",
        "Forming nouns from other adjectives for humorous effect."
      ],
      "tags": [
        "morpheme",
        "colloquial"
      ],
      "recordId": "a587a4e2305798f43f7b5ddb96f5ef47ac197317887b98d963f50d08e2f37f3c",
      "rawRecordSha256": "8e8f3bf2dd714505aa85d0868782d962e5f2b5e18d8185f8eb93398fd4fc42ca",
      "sourceRecordOrdinal": 998063
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 0,
    "glosses": 0
  }
}

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 -osity →

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-LW9zaXR5