styleless

tyylitön, mauton Lacking good style or any style at all.
1921, Edward Livermore Burlingame, Robert Bridges, Alfred Dashiell, Harlan Logan, Scribners Magazine''

It is not enough to say that style is a characteristic mode of expression, for then it would be almost impossible to speak of anything as styleless.

He was too thin, so that the styleless clothes hung poorly, and something in his coloring made her think that he ate the wrong foods.

Short-styled and styleless flowers were sometimes mixed in these individuals.