English
plain
Plain comes from Middle English pleyn, from Anglo-Norman pleyn (Old French plain), from Latin plānus ‘flat, level’.
- Latinc. 75 BCE–200 CEplānus1‘flat, even, level’
- Anglo-Normanc. 1066–1400pleyn1
- Middle Englishc. 1150–1500pleyn1‘clear’
- Englishearliest quotation 1577plain1
attested reconstructed ? uncertain or disputed deepest recorded ancestor
- 1 Wiktionary, English plain
- Earliest quotation in Wiktionary’s entry: 1577, Socrates Scholasticus [i.e., Socrates of Constantinople]: “[VV]e are able with playne demonſtration to proue, and…”.
Lineage
- Latinc. 75 BCE–200 CEplānusWiktionary, English plain‘flat, even, level’
- Anglo-Normanc. 1066–1400pleynWiktionary, English plain
- Middle Englishc. 1150–1500pleynWiktionary, English plain‘clear’
- Englishearliest quotation 1577plainWiktionary, English plain. Earliest quotation in Wiktionary’s entry: 1577, Socrates Scholasticus [i.e., Socrates of Constantinople]: “[VV]e are able with playne demonſtration to proue, and…”
Linked words
through Proto-Indo-European *pleh₂- ‘flat’
field, floor, palm, planet, clan, archipelago, fluke, parma, flounder, placenta, playa, lech, polonium, pelagic, palatine, placate, veld, implacable, plantar, floe, flay, purdah, planta, 47 more
through Proto-Italic *plānos
plane, explanation, explanatory, planar, esplanade, 12 more
through Latin plānus ‘flat, even, level, plain’
Another origin of plain
- Proto-Indo-Europeanc. 4500–2500 BCE*pleh₂-‘flat’uncertain
- Proto-Indo-Europeanc. 4500–2500 BCE*pl̥h₂nósreconstructed
- Proto-Italicc. 1500–700 BCE*plānosreconstructed
- Latinc. 75 BCE–200 CEplānus‘level, even, flat’
- Latinc. 75 BCE–200 CEplānum‘level ground, a plain’
- Old Frenchc. 842–1400plain‘plain (flat area)’
- Englishtodayplain
Today it means
adj Flat, level.
Sources
Sources: Wiktionary, “plain”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / Latin plānus / plain