*SET-U

English word origin

Etymology of slug

Originally referred to a slow, lazy person, from Middle English slugge (“lazy person", also "sloth, slothfulness”), probably of either Old English or Old Norse origin; perhaps ultimately from Proto-Indo-European *sliǵ-ōn

2 source sectionsExtended source reportWiktionary original ↗
In this entry · 2 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 ↗
noun

Any of many gastropod mollusks, having no (or only a rudimentary) shell. · A slow, lazy person; a sluggard. · A bullet or other projectile fired from a firearm; in modern usage, generally refers to a shotgun slug. · A solid block or piece of roughly shaped metal.

verb

To drink quickly; to gulp; to down. · To take part in casual carpooling; to form ad hoc, informal carpools for commuting, essentially a variation of ride-share commuting and hitchhiking. · To become reduced in diameter, or changed in shape, by passing from a larger to a smaller part of the bore of the barrel. · To move slowly or sluggishly; to lie idle.

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

Originally referred to a slow, lazy person, from Middle English slugge (“lazy person", also "sloth, slothfulness”), probably of either Old English or Old Norse origin; perhaps ultimately from Proto-Indo-European *sliǵ-ōn, from *sley- (“smooth; slick; sticky; slimy”) or otherwise from the root of Old Norse slókr (“lazy person, oaf”), whence Icelandic slókur (“laziness”). Compare Norn slug (“lazy, slothful, sluggish”), dialectal Norwegian slugg (“a large, heavy body”), sluggje (“heavy, slow person”), Danish slog (“rascal, rogue”). Compare also Dutch slak (“snail, slug”). Doublet of slotch. The sense of a hitchhiking commuter is from the sense of a counterfeit bus token. Bus operators considered sluggers to be cheating as if they were using counterfeit tokens.

Relationships mentioned by the source

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

  • Inherited-form mentionsluggeenm · lazy person", also "sloth, slothfulness
  • Cognate mentionslókrnon · lazy person, oaf
  • Cognate mentionslókuris · laziness
  • Cognate mentionslugnrn · lazy, slothful, sluggish
  • Cognate mentionsluggno · a large, heavy body
  • Cognate mentionslogda · rascal, rogue
  • Cognate mentionslaknl · snail, slug
  • Doublet mentionslotchen

This page abbreviates 18 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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      "name": "vern",
      "args": {
        "1": "Spanish slug"
      },
      "expansion": "Spanish slug"
    },
    {
      "name": "taxlink",
      "args": {
        "1": "Arion vulgaris",
        "2": "species"
      },
      "expansion": "Arion vulgaris"
    },
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      "name": "inh",
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        "2": "enm",
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      },
      "expansion": "Middle English slugge (“lazy person\", also \"sloth, slothfulness”)"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "-"
      },
      "expansion": "Old English"
    },
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      "name": "der",
      "args": {
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        "2": "non",
        "3": "-"
      },
      "expansion": "Old Norse"
    },
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      "name": "der",
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        "2": "ine-pro",
        "3": "",
        "4": "*sliǵ-ōn"
      },
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    },
    {
      "name": "cog",
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        "1": "non",
        "2": "slókr",
        "t": "lazy person, oaf"
      },
      "expansion": "Old Norse slókr (“lazy person, oaf”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "is",
        "2": "slókur",
        "t": "laziness"
      },
      "expansion": "Icelandic slókur (“laziness”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "nrn",
        "2": "slug",
        "t": "lazy, slothful, sluggish"
      },
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    },
    {
      "name": "cog",
      "args": {
        "1": "no",
        "2": "slugg",
        "t": "a large, heavy body"
      },
      "expansion": "Norwegian slugg (“a large, heavy body”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "da",
        "2": "slog",
        "t": "rascal, rogue"
      },
      "expansion": "Danish slog (“rascal, rogue”)"
    },
    {
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        "1": "nl",
        "2": "slak",
        "t": "snail, slug"
      },
      "expansion": "Dutch slak (“snail, slug”)"
    },
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        "1": "en",
        "2": "slotch"
      },
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    }
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      "slugge",
      "slugge#Middle_English"
    ],
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      "*sley-",
      "Reconstruction:Proto-Indo-European/sley-"
    ],
    [
      "slókr",
      "slókr#Old_Norse"
    ],
    [
      "slókur",
      "slókur#Icelandic"
    ],
    [
      "slug",
      "slug#Norn"
    ],
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      "slugg",
      "slugg#Norwegian"
    ],
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      "sluggje",
      "sluggje#Norwegian"
    ],
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      "slog",
      "slog#Danish"
    ],
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      "slak",
      "slak#Dutch"
    ],
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      "slotch#English"
    ],
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      "slugger"
    ]
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Source etymology 2

Original entry ↗
noun

A hard blow, usually with the fist.

verb

To hit very hard, usually with the fist.

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

Uncertain. Perhaps somehow from Proto-Germanic *slagiz (“a blow, strike”). If so, then cognate with slay and slaughter; also German Schlag (“blow, hit”) and Dutch slag (“blow, strike”). Also compare slog.

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.

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      "expansion": "Uncertain"
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        "4": "",
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    ]
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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 slug →

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-c2x1Zw