This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Without adornment or embellishment; simple or plain.

adj. Having no additional decoration or embellishment; plain and simple

Not admired; not regarded with affection or respect; not admirable.

adj. not decorated with something to increase its beauty or distinction

"Though trained as a chemist, he is considered an excellent theologian, and he is legendary for his simple and self-denying way of life: he lives in unadorned rooms near the cathedral in Buenos Aires and takes the bus to his appointments."

untufted    unornamented    unembellished    spare    plain    bare   

unadornedness   

plain    simple    bare    unornamented    ungarnished    unvarnished    naked    blank   

adorned    forewarned    horned    mourned    scorned    warned   

featureless    windowless    stark    unpretentious    utilitarian    homespun    unvarnished    loose-fitting    bare    matter-of-fact