air, effect, impression

hint, implication, insinuation, resemblance, suggestion

affectation, demonstration, display, fiction, image, imitation, imposture, likeness, make-believe (also make-belief), pose, pretense (or pretence), representation, simulation

cloak, disguise, exterior, facade (also façade), front, gloss, mask, masquerade, patina, Potemkin village, shape, shell, surface, veneer