*SET-U

English word origin

Etymology of frob

Clipping of frobnicate, from frobnitz, coined circa 1958 by David R. Sawyer of the MIT Tech Model Railroad Club (TMRC). Year of origin uncertain, and could be 1958–1981: frob is not listed in the TMRC dictionaries of 195

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 ↗
verb

To manipulate in some ill-defined way; to tweak or mess about with. · To perform a task that is clear to the speaker but too complex or tedious to be explained, so that outside help is not helpful. · To transform and obscure in a trivial fashion with memfrob(3).

noun

Any small device or object (usually hand-sized) which can be manipulated.

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

Clipping of frobnicate, from frobnitz, coined circa 1958 by David R. Sawyer of the MIT Tech Model Railroad Club (TMRC). Year of origin uncertain, and could be 1958–1981: frob is not listed in the TMRC dictionaries of 1959 or 1960, and is first listed in the Jargon File (1981 edition), so it may date from the 1960s or 1970s. Possibly variant of or influenced by frotsus (“a protruding arm or trunnion”), which is listed in TMRC 1959 and 1960.

Inspect preserved source fields

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

{
  "templates": [
    {
      "name": "clipping",
      "args": {
        "1": "en",
        "2": "frobnicate"
      },
      "expansion": "Clipping of frobnicate"
    }
  ],
  "links": [
    [
      "frobnicate",
      "frobnicate#English"
    ],
    [
      "frobnitz",
      "frobnitz#English"
    ],
    [
      "MIT",
      "MIT"
    ],
    [
      "frotsus",
      "frotsus#English"
    ],
    [
      "trunnion",
      "trunnion"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "verb",
      "glosses": [
        "To manipulate in some ill-defined way; to tweak or mess about with.",
        "To perform a task that is clear to the speaker but too complex or tedious to be explained, so that outside help is not helpful.",
        "To transform and obscure in a trivial fashion with memfrob(3)."
      ],
      "tags": [
        "rare",
        "slang",
        "transitive"
      ],
      "recordId": "2b5ac37d2b9ccdf343d94b1220417916feee1d94107aef1efed357f137945a34",
      "rawRecordSha256": "95be0eb9153b8b81c13e5d314fee6c6f60ea30b6c86bfa48b97c4529637fc63d",
      "sourceRecordOrdinal": 2391553
    },
    {
      "pos": "noun",
      "glosses": [
        "Any small device or object (usually hand-sized) which can be manipulated."
      ],
      "tags": [
        "slang"
      ],
      "recordId": "b396961a39d86e0d6895004253e5437266db2116bd23476d38e8c77ca1078f10",
      "rawRecordSha256": "d5284d615baba893efffc1eb90844951136281becb68bf6d1346a834251f48f7",
      "sourceRecordOrdinal": 2391552
    }
  ],
  "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 frob →

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-ZnJvYg