about

plain (plan) adj. < L planus, flat, level < IE base *pla-, broad, flat > FLOOR, FIELD 1 orig., flat: level: plane 2 free from obstructions; open; clear [in plain view] 3 clearly understood; evident; obvious [to make one's meaning plain] 4 a) outspoken; frank; straightforward [plain talk] b) downright; thoroughgoing [plain nonsense] unembellished 5 not complicated; simple 6 not figured, dyed or twilled [plain cloth] 7 pure; unmixed [plain soda] 8 not of high rank or position; such as characterizes the common people; ordinary [a plain man] 9 clearly or simply [plain space]