plainness

Variant of plain

adjective

Obsolete flat; level; plane
free from obstructions; open; clear: in plain view
clearly understood; evident; obvious: to make one's meaning plain
1. outspoken; frank; straightforward: plain talk
2. 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