- The definition of plain is clearly understood, obvious, simple or not complicated.
- An example of plain is using basic language to describe something.
- An example of plain is unflavored yogurt.
- An example of plain is a woman without make-up.
- Obsolete flat; level; plane
- free from obstructions; open; clear: in plain view
- clearly understood; evident; obvious: to make one's meaning plain
- outspoken; frank; straightforward: plain talk
- downright; thoroughgoing: plain nonsense
- not luxurious or ornate; unembellished: a plain coat
- not complicated; simple: plain sewing
- not good-looking; homely: a plain face
- not figured, dyed, or twilled: plain cloth
- pure; unmixed: plain soda
- not of high rank or position; such as characterizes the common people; ordinary: a plain man
Origin: OFr from Classical Latin planus, flat, level from Indo-European base an unverified form plā-, broad, flat from source floor, field
Origin: Middle English pleynen from Old French plaindre from Classical Latin plangere: see plaint
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adjective plain·er, plain·est
- Free from obstructions; open; clear: in plain view.
- Obvious to the mind; evident: make one's intention plain. See Synonyms at apparent.
- Not elaborate or complicated; simple: plain food.
- Straightforward; frank or candid: plain talk.
- Not mixed with other substances; pure: plain water.
- Common in rank or station; average; ordinary: a plain man.
- Not pretentious; unaffected.
- Marked by little or no ornamentation or decoration.
- Not dyed, twilled, or patterned: a plain fabric.
- Lacking beauty or distinction: a plain face.
- Sheer; utter; unqualified: plain stupidity.
- Archaic Having no visible elevation or depression; flat; level.
- a. An extensive, level, usually treeless area of land.b. A broad level expanse, as a part of the sea floor or a lunar mare.
- Something free of ornamentation or extraneous matter.
Origin: Middle English, from Old French, from Latin plānus; see pelə-2 in Indo-European roots.
- plainˈly adverb
- plainˈness noun
plain - Phrases/Idioms
plain - Science Definition
- An extensive, relatively level area of land. Plains are present on all continents except Antarctica and are most often located in the interior regions. Because they can occur at almost any altitude or latitude, plains can be humid and forested, semiarid and grass-covered, or arid.
- A broad, level expanse, such as an area of the sea floor or a lunar mare.
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