undressable adjective2 •Capable of being undressed.Suitable toys include wooden bricks, balls, trucks, hammer and pegs, an undressable doll, large cartons for the child to climb in and out of. — 1980 •Not dressable; not able to be dressed.yet she stopped to dress us in our Sunday clothes , — and it was no sinecure to dress three persistently undressable children — 1886