Etymograph

English

mouser

Mouser comes from Middle English mousere ‘a hunter of mice’, from mous ‘mouse or shrew’, and ultimately from Proto-Indo-European *múHs.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*múHs‘mouse’reconstructed
  2. Proto-Germanicc. 500 BCE–200 CE*mūs‘mouse’reconstructed
  3. Proto-West Germanicc. 200–500 CEsame form‘mouse’reconstructed
  4. Old Englishc. 450–1150mūs‘mouse’
  5. Middle Englishc. 1150–1500mous‘mouse or shrew’
  6. Middle English, derivedc. 1150–1500mousen‘to catch mice’
  7. Middle English, derivedc. 1150–1500mousere‘a hunter of mice’
  8. Englishearliest quotation 1932mouser

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*múHs‘mouse’reconstructed
  2. Proto-Germanicc. 500 BCE–200 CE*mūs‘mouse’reconstructed
  3. Proto-West Germanicc. 200–500 CEsame form‘mouse’reconstructed
  4. Old Englishc. 450–1150mūs‘mouse’
  5. Middle Englishc. 1150–1500mous‘mouse or shrew’
  6. Middle English, derivedc. 1150–1500mousen‘to catch mice’
  7. Middle English, derivedc. 1150–1500mousere‘a hunter of mice’
  8. Englishearliest quotation 1932mouser

Earliest quotation: 1932, Lewis Grassic Gibbon, Sunset Song (A Scots Quair): “He was a pretty man, well upstanding, with great…”

Formed from mouse + -er

Proto-Indo-European *múHs

Proto-Germanic *mūs

Proto-West Germanic *mūs

Old English mūs

Middle English mous ‘mouse or shrew’

English mouse

The story

The “moustache” sense is apparently an extended usage (i.e., a cat’s whiskers, jocularly transferred to human beings), possibly with influence from moustache.

Linked words

through Proto-Indo-European *múHs ‘mouse’

muscle, murine, myelin, musculature, mussel, myocardium, 16 more

through Proto-Germanic *mūs ‘mouse’

mice, 1 more

Today it means

noun A cat that catches mice, kept specifically for the purpose.

Language periods are conventional ranges, not dates for this word.

Etymograph / Proto-Indo-European *múHs / mouser