the quality or condition of being straight; straightness.

absence of crookedness or deceiving nature; straightforwardness; sincerity; uprightness.

the quality or fact of being not ornate, unornamented.

the quality of being not luxurious; plainness; simplicity.

the quality of not spending extravagantly; simple life style; simplicity.

the fact of being not showy, flashy; simpleness.

the quality of being easy to do, understand, manage or solve.