Etymograph

English

monthly

Monthly is month + -ly, perhaps via Middle English *monethly from Old English mōnaþlīċ, from Proto-Germanic *mēnōþlīkaz.

  1. Proto-Germanicc. 500 BCE–200 CE*mēnōþlīkaz‘monthly’uncertain
  2. Proto-West Germanicc. 200–500 CE*mānōþlīk‘monthly’uncertain
  3. Old Englishc. 450–1150mōnaþlīċ‘monthly’uncertain
  4. Middle Englishc. 1150–1500*monethly‘monthly’uncertain
  5. Englishearliest quotation 2024monthly

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Germanicc. 500 BCE–200 CE*mēnōþlīkaz‘monthly’uncertain
  2. Proto-West Germanicc. 200–500 CE*mānōþlīk‘monthly’uncertain
  3. Old Englishc. 450–1150mōnaþlīċ‘monthly’uncertain
  4. Middle Englishc. 1150–1500*monethly‘monthly’uncertain
  5. Englishearliest quotation 2024monthly

Earliest quotation: 2024, maia arson crimew, israeli national police found trying to purchase stalkerware: “all of these services, including mSpy, function with the…”

Formed from month + -ly

Proto-Indo-European *mḗh₁n̥s ‘moon’

Proto-Germanic *mēnōþs

Proto-West Germanic *mānōþ

Old English mōnaþ

Middle English mon(e)th

English month

The story

From month + -ly (adjectival suffix), perhaps via Middle English *monethly (attested only adverbially), from Old English mōnaþlīċ (‘monthly’), from Proto-West Germanic *mānōþlīk, from Proto-Germanic *mēnōþlīkaz (‘monthly’).

Another origin of monthly

  1. Middle Englishc. 1150–1500monethly
  2. Englishtodaymonthly

Today it means

adj Occurring every month.

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

Etymograph / Proto-Germanic *mēnōþlīkaz / monthly