Etymograph

English

firmity

Firmity comes from Latin firmitas ‘firmness, durability, strength’, from firmus ‘stable, strong, firm’, and ultimately from Proto-Indo-European *dʰer- ‘to support’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*dʰer-‘to support’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*dʰermosreconstructed
  3. Proto-Italicc. 1500–700 BCE*θermosreconstructed
  4. Proto-Italic, derivedc. 1500–700 BCE*fermosreconstructed
  5. Latinc. 75 BCE–200 CEfirmus‘stable, strong, firm’
  6. Latin, derivedc. 75 BCE–200 CEfirmitas‘firmness, durability, strength’
  7. Englishearliest quotation 1586firmity

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*dʰer-‘to support’reconstructed
  2. Proto-Indo-European, derivedc. 4500–2500 BCE*dʰermosreconstructed
  3. Proto-Italicc. 1500–700 BCE*θermosreconstructed
  4. Proto-Italic, derivedc. 1500–700 BCE*fermosreconstructed
  5. Latinc. 75 BCE–200 CEfirmus‘stable, strong, firm’
  6. Latin, derivedc. 75 BCE–200 CEfirmitas‘firmness, durability, strength’
  7. Englishearliest quotation 1586firmity

Earliest quotation: 1586, William Perkins, A right godly and learned exposition: “the firmity and ſledfaſtnes of the Church”.

Linked words

through Proto-Indo-European *dʰer- ‘to support’

dark, drug, dry, drama, dare, throne, drain, drone, feasible, drastic, refrain, darn, formidable, dazed, dharma, dor, dern, 36 more

through Proto-Italic *fermos

confirmation, 4 more

through Latin firmus ‘stable, strong, firm’

confirm, affirmative, infirmary, affirmation, affirming, firmament, infirm, 6 more

Today it means

noun strength; firmness; stability

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

Etymograph / Proto-Indo-European *dʰer- / firmity