ostentation (n.)

mid-15c., ostentacioun, "ambitious display, pretentious show, display intended to evoke admiration or attract attention," from Old French ostentacion (mid-14c.) and directly from Latin ostentationem (nominative ostentatio) "showing, exhibition, vain display," noun of action from past-participle stem of ostentare "to display," frequentative of ostendere "to show" (see ostensible).