4 days ago · plain suggests outspokenness and freedom from affectation or subtlety in expression.

In geography, a plain, commonly known as flatland, is a flat expanse of land that generally has few rapid or steep changes in elevation. Natural vegetation in plains can include prairies / grasslands, forests, …

1. Free from obstructions; open; clear: in plain view. 2. Obvious to the perception or mind; evident: make one's intention plain. See Synonyms at apparent. 3. a. Not elaborate or complicated; simple: plain food.

She wore a plain black dress. We've chosen a plain carpet (= one without a pattern) and patterned curtains. He prefers plain food - nothing too fancy. We're having plain blue walls in the dining room.

PLAIN definition: clear or distinct to the eye or ear: to stand in plain view. See examples of plain used in a sentence.

4 days ago · The simple definition of PLAIN is having no pattern or decoration.

Jun 18, 2026 · plain (third-person singular simple present plains, present participle plaining, simple past and past participle plained) (obsolete, transitive) To level; to raze; to make plain or even on the surface.

Mar 30, 2026 · “Plane” often relates to an aircraft, a flat surface, or a concept in geometry, whereas “plain” describes something simple, clear, or refers to a broad, flat land area.

Jun 16, 2026 · plain, any relatively level area of the Earth’s surface exhibiting gentle slopes and small local relief. Plains vary widely in size.

Plain is the AI support stack built for B2B teams. Composable infrastructure that gives you complete flexibility to build a support motion that grows with your business — no-code or all-code.