*SET-U

English word origin

Etymology of apo-

Etymology tree Proto-Indo-European *h₂ep Proto-Indo-European *-o Proto-Indo-European *h₂epó Proto-Hellenic *apó Ancient Greek ᾰ̓πό (ăpó) Ancient Greek ᾰ̓πο- (ăpo-)bor. English apo- From the Ancient Greek prefix ἀπό- (apó

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 ↗
prefix

Lacking, without, scant. · An apoenzyme: an enzyme without its cofactor; associated apoproteins. · Lacking a metallic unit. · Not, opposite.

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

Etymology tree Proto-Indo-European *h₂ep Proto-Indo-European *-o Proto-Indo-European *h₂epó Proto-Hellenic *apó Ancient Greek ᾰ̓πό (ăpó) Ancient Greek ᾰ̓πο- (ăpo-)bor. English apo- From the Ancient Greek prefix ἀπό- (apó-), from the preposition ἀπό (apó, “from, away from”), from the Proto-Indo-European *h₂epo (“off, away”), whence the English words off and of, and ab- (via Latin). Doublet of ab- and off-.

Relationships mentioned by the source

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

This page abbreviates 11 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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      "args": {
        "1": "en",
        "2": ":bor",
        "3": "grc:ᾰ̓πο-",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *h₂ep\nProto-Indo-European *-o\nProto-Indo-European *h₂epó\nProto-Hellenic *apó\nAncient Greek ᾰ̓πό (ăpó)\nAncient Greek ᾰ̓πο- (ăpo-)bor.\nEnglish apo-\n[Appendix:Glossary#loanword|Borrowed]] from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*h₂ep\", \"status\" : \"missing\", \"lang\" : \"ine-pro\" }, { \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*-o\", \"status\" : \"missing\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*h₂epó\", \"status\" : \"ok\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-Hellenic\", \"term\" : \"*apó\", \"status\" : \"ok\", \"lang\" : \"grk-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Ancient Greek\", \"term\" : \"ᾰ̓πό\", \"status\" : \"ok\", \"lang\" : \"grc\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang_name\" : \"Ancient Greek\", \"term\" : \"ᾰ̓πο-\", \"status\" : \"ok\", \"lang\" : \"grc\" } ], \"keyword\" : \"bor\" } ], \"lang_name\" : \"English\", \"term\" : \"apo-\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"apo-\">"
    },
    {
      "name": "bor",
      "args": {
        "1": "en",
        "2": "grc",
        "3": "-"
      },
      "expansion": "Ancient Greek"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*h₂epo",
        "4": "",
        "5": "off, away"
      },
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    },
    {
      "name": "noncog",
      "args": {
        "1": "en",
        "2": "-"
      },
      "expansion": "English"
    },
    {
      "name": "doublet",
      "args": {
        "1": "en",
        "2": "ab-",
        "3": "off-"
      },
      "expansion": "Doublet of ab- and off-"
    },
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      },
      "expansion": "Etymology tree\nProto-Indo-European *h₂ep\nProto-Indo-European *-o\nProto-Indo-European *h₂epó\nProto-Hellenic *apó\nAncient Greek ᾰ̓πό (ăpó)\nAncient Greek ᾰ̓πο- (ăpo-)bor.\nEnglish apo-"
    }
  ],
  "links": [
    [
      "*h₂ep",
      "Reconstruction:Proto-Indo-European/h₂ep"
    ],
    [
      "*-o",
      "Reconstruction:Proto-Indo-European/-o"
    ],
    [
      "*h₂epó",
      "Reconstruction:Proto-Indo-European/h₂epó"
    ],
    [
      "*apó",
      "Reconstruction:Proto-Hellenic/apó"
    ],
    [
      "ᾰ̓πό",
      "ἀπό#Ancient_Greek"
    ],
    [
      "ᾰ̓πο-",
      "ἀπο-#Ancient_Greek"
    ],
    [
      "ἀπό-",
      "ἀπό-#Ancient_Greek"
    ],
    [
      "ἀπό",
      "ἀπό#Ancient_Greek"
    ],
    [
      "*h₂epo",
      "Reconstruction:Proto-Indo-European/h₂epo"
    ],
    [
      "off",
      "off#English"
    ],
    [
      "of",
      "of#English"
    ],
    [
      "ab-",
      "ab-#English"
    ],
    [
      "ab-",
      "ab-#English"
    ],
    [
      "off-",
      "off-#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "prefix",
      "glosses": [
        "Lacking, without, scant.",
        "An apoenzyme: an enzyme without its cofactor; associated apoproteins.",
        "Lacking a metallic unit.",
        "Not, opposite."
      ],
      "tags": [
        "morpheme"
      ],
      "recordId": "560e3f4839ca83bcadd8774496bddecfd0ff3deed69ab8e7b9fe3e91d3520fab",
      "rawRecordSha256": "9a6dd508818c7536aa5069af2204d21e2f5dbd72e4c4a5852890f4970984c9dd",
      "sourceRecordOrdinal": 468670
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  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
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    "lexicalRecords": 0,
    "lexicalSenses": 11,
    "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 apo- →

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-YXBvLQ