Etymograph

English

explain

Explain comes from Middle English explanen, from Old French explaner, from Latin explānō ‘to flatten, make plain’, from ex- + plānō.

  1. Latinc. 75 BCE–200 CEplānus‘level, plain’
  2. Latin, derivedc. 75 BCE–200 CEplānō‘to flatten’
  3. Latin, derivedc. 75 BCE–200 CEexplānō‘to make plain, explain’
  4. Old Frenchc. 842–1400explaner
  5. Middle Englishc. 1150–1500explanen
  6. Englishearliest quotation 1909explain

attested reconstructed ? uncertain or disputed deepest recorded ancestor

Lineage

  1. Latinc. 75 BCE–200 CEplānus‘level, plain’
  2. Latin, derivedc. 75 BCE–200 CEplānō‘to flatten’
  3. Latin, derivedc. 75 BCE–200 CEexplānō‘to make plain, explain’
  4. Old Frenchc. 842–1400explaner
  5. Middle Englishc. 1150–1500explanen
  6. Englishearliest quotation 1909explain

Earliest quotation: 1909, Archibald Marshall pseudonym; Arthur Ham, A Court Ball: “The boy became volubly friendly and bubbling over with…”

Linked words

through Proto-Indo-European *pleh₂- ‘flat’

field, floor, planet, palm, clan, archipelago, fluke, parma, flounder, placenta, playa, lech, polonium, palatine, pelagic, placate, implacable, veld, plantar, flay, floe, purdah, planta, 50 more

through Proto-Italic *plānos

plane, planar, 15 more

through Latin planus ‘level, plain’

plan, llano, 17 more

through Latin explanō ‘to flatten, spread out, make plain or clear,…’

esplanade, unexplainable, 6 more

Today it means

verb To make plain, manifest, or intelligible; to clear of obscurity; to illustrate the meaning of.

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

Etymograph / Latin plānus / explain