Made of or consisting of cardboard.
Of or like cardboard.
A material similar to thick, stiff paper, that is made of pressed paper pulp or pasted sheets of paper. It is used for making cartons and signs, for example.
A material made of paper pulp but thicker and stiffer than paper; pasteboard: used for making cards, boxes, etc.
Lacking depth; superficial.
A movie with only cardboard caricatures of its historical subjects.
Insubstantial or flimsy.
A cardboard empire.
Superficial or shallow.
Cardboard characters in a play.