plain
UK: pleɪn | US: pleɪn
adj. simple or uncomplicated in form, design, or style
adj. clear and easy to understand
n. a large area of flat land with few trees
The word "plain" traces back to the Latin planus, meaning "flat, level, or clear." It entered Old French as plain (flat or clear) and was adopted into Middle English with the same spelling. The dual meanings—referring to both physical flatness (as in land) and conceptual clarity (as in language)—reflect the Latin root’s broad semantic range. Over time, "plain" retained these core ideas, emphasizing simplicity and lack of ornamentation in both literal and figurative contexts.
The plain white walls gave the room a minimalist feel.
Her instructions were plain and easy to follow.
We drove across the vast plain for hours without seeing a town.
He preferred plain food without spices or sauces.
The truth was plain to everyone except him.