*SET-U

English word origin

Etymology of ratty

From rat + -y (suffix meaning ‘having the quality of’ forming adjective).

1 source sectionBrief source recordWiktionary 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.

Source etymology 1

Original entry ↗
adj

Resembling or characteristic of a rat; ratlike. · Infested with rats. · In poor condition or repair. · Crazy, mad; ridiculous; slightly strange, eccentric; also (followed by about, on, or over), attracted to, infatuated with.

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

From rat + -y (suffix meaning ‘having the quality of’ forming adjective).

This page abbreviates 1 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.

{
  "templates": [
    {
      "name": "glossary",
      "args": {
        "1": "suffix"
      },
      "expansion": "suffix"
    },
    {
      "name": "glossary",
      "args": {
        "1": "adjective"
      },
      "expansion": "adjective"
    },
    {
      "name": "suffix",
      "args": {
        "1": "en",
        "2": "rat",
        "3": "y",
        "pos2": "suffix meaning ‘having the quality of’ forming adjective",
        "id2": "adjectival"
      },
      "expansion": "rat + -y (suffix meaning ‘having the quality of’ forming adjective)"
    }
  ],
  "links": [
    [
      "rat",
      "rat#English"
    ],
    [
      "-y",
      "-y#English:_adjectival"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "adj",
      "glosses": [
        "Resembling or characteristic of a rat; ratlike.",
        "Infested with rats.",
        "In poor condition or repair.",
        "Crazy, mad; ridiculous; slightly strange, eccentric; also (followed by about, on, or over), attracted to, infatuated with."
      ],
      "tags": [
        "figuratively",
        "informal",
        "Australia"
      ],
      "recordId": "fc08ff584a2732d409ee225a94f3b73029ae825d05763a13080a46b96a948245",
      "rawRecordSha256": "3d19b79533b5efe8d426eef219b24155a3dadce835c9440f0e583ae25851cfe2",
      "sourceRecordOrdinal": 554530
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 1,
    "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 ratty →

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-cmF0dHk