May 12, 2026 · 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, …

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.

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.

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

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.

Jan 8, 2026 · Plain describes simplicity or a flat land area, while plane refers to an airplane or a geometric surface. Both words are spelled the same in British and American English, but context …

May 14, 2026 · plain, any relatively level area of the Earth’s surface exhibiting gentle slopes and small local relief. Plains vary widely in size.

Plane and plain are easy to confuse. Plane usually means an airplane, a flat surface, or a tool for shaving wood. Plain usually means simple or an expanse of lowland.

If something is in plain view, it's out in the open with no obstructions. But usually we use plain as an adjective to describe unembellished, bare, or unimpressive things.