*SET-U

English word origin

Etymology of yo

As a greeting first attested in 1859, attested first as a cry of sailors and huntsmen (first attested in the 1400s; compare e.g. huzzah, giddyup). Originally from Middle English yo, io, ȝo, yeo, yaw, variant forms of ya,

5 source sectionsExtended source reportWiktionary original ↗
In this entry · 5 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 ↗
intj

A greeting similar to hi. · An interjection similar to hey. · An expression of surprise or excitement. · Present! Here!

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

As a greeting first attested in 1859, attested first as a cry of sailors and huntsmen (first attested in the 1400s; compare e.g. huzzah, giddyup). Originally from Middle English yo, io, ȝo, yeo, yaw, variant forms of ya, ye (“yes, yea”), from Old English ġēa (“yes, yea”), from Proto-Germanic *ja (“yes, thus, so”); or perhaps from Old English ēow (“Wo!, Alas!”, interjection). Compare Danish, Swedish, German, Norwegian jo (“yes (flexible meaning)”), Dutch jow (“hi, hey”) and Dutch jo (“hi, hey”). More at yea, ow, ew. Modern popularity apparently dates from the early 20th century in Philadelphia, PA; amongst the Italian Community there, where io, with (as opposed to in standard Italian language) the stress on the ultima, was a common salutatory response among residents, particularly young males. This usage was apparently reinforced by the aforesaid English terms. It has been claimed to have been a common response at roll calls during World War 2 (see definition 4), and then most intensely attested in Philadelphia, Pennsylvania; it thence spread globally from American dominance of pop culture post-WWII.

Relationships mentioned by the source

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

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.

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        "1": "1859",
        "nocap": "1"
      },
      "expansion": "first attested in 1859"
    },
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        "nocap": "1"
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        "2": "gem-pro",
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      },
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    },
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      "name": "inh",
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        "1": "en",
        "2": "ang",
        "3": "ēow",
        "4": "",
        "5": "Wo!, Alas!",
        "pos": "interjection"
      },
      "expansion": "Old English ēow (“Wo!, Alas!”, interjection)"
    },
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      "name": "cog",
      "args": {
        "1": "da",
        "2": "-"
      },
      "expansion": "Danish"
    },
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      "name": "cog",
      "args": {
        "1": "sv",
        "2": "-"
      },
      "expansion": "Swedish"
    },
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      "name": "cog",
      "args": {
        "1": "de",
        "2": "-"
      },
      "expansion": "German"
    },
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        "1": "no",
        "2": "jo",
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      },
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    },
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      },
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    },
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    }
  ],
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    [
      "huzzah",
      "huzzah#English"
    ],
    [
      "giddyup",
      "giddyup#English"
    ],
    [
      "yo",
      "yo#Middle_English"
    ],
    [
      "io",
      "io#Middle_English"
    ],
    [
      "ȝo",
      "ȝo#Middle_English"
    ],
    [
      "yeo",
      "yeo#Middle_English"
    ],
    [
      "yaw",
      "yaw#Middle_English"
    ],
    [
      "ya",
      "ya#Middle_English"
    ],
    [
      "ye",
      "ye#Middle_English"
    ],
    [
      "ġēa",
      "gea#Old_English"
    ],
    [
      "*ja",
      "Reconstruction:Proto-Germanic/ja"
    ],
    [
      "ēow",
      "eow#Old_English"
    ],
    [
      "jo",
      "jo#Norwegian"
    ],
    [
      "jow",
      "jow#Dutch"
    ],
    [
      "jo",
      "jo#Dutch"
    ],
    [
      "yea",
      "yea#English"
    ],
    [
      "ow",
      "ow#English"
    ],
    [
      "ew",
      "ew#English"
    ],
    [
      "io",
      "io#Italian"
    ],
    [
      "salutatory",
      "salutatory"
    ],
    [
      "response",
      "response"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
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      "pos": "intj",
      "glosses": [
        "A greeting similar to hi.",
        "An interjection similar to hey.",
        "An expression of surprise or excitement.",
        "Present! Here!"
      ],
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        "slang"
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Source etymology 2

Original entry ↗
det

Pronunciation spelling of your.

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

From a non-rhotic pronunciation of your with the dough-door merger.

Inspect preserved source fields

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

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      "non-rhotic"
    ],
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      "your",
      "your#English"
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        "Pronunciation spelling of your."
      ],
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Source etymology 3

Original entry ↗
pron

Generic third-person singular pronoun (primarily used in place of he and she).

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

Ellipsis of such phrases as your friend/buddy, your brother/sister, your mom/dad, etc., referring to someone (whether present or absent, male or female) who is related to the interlocutor in some way. All such forms were then shortened to your (pronounced [joʊ], "yo", which see above). Eventually, the original meaning "your [someone]" was lost and broadened to "that person".

Inspect preserved source fields

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

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      },
      "expansion": "Ellipsis of"
    }
  ],
  "links": [
    [
      "interlocutor",
      "interlocutor"
    ],
    [
      "above",
      "#Etymology 2"
    ]
  ],
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Source etymology 5

Original entry ↗
noun

The name of the letter Ё/ё in Cyrillic alphabets.

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

From Russian ё (jo).

Relationships mentioned by the source

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

  • Borrowed-form mentionёru
Inspect preserved source fields

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

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    }
  ],
  "links": [
    [
      "ё",
      "ё#Russian"
    ]
  ],
  "references": [],
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    {
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      ],
      "tags": [],
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Source etymology 7

Original entry ↗
noun

Obsolete form of yue, a traditional Chinese unit of volume.

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

From irregular romanization of the standard Mandarin pronunciation of Chinese 龠 (yuè).

Relationships mentioned by the source

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

  • Derivation mention龠zh
Inspect preserved source fields

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

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    },
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      "name": "der",
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    [
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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 yo →

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-eW8