† ˈpestful,a.Obs. [f. pest + -ful.] Pestiferous, pestilential. 1608Sylvester Du Bartas ii. iv. iv. Schisme 417 The Lybians pest-full and un-blest-full shore.1794Coleridge Destiny of Nations, Long and pestful calms, With slimy shapes, and miscreated life Poisoning the vast Pacific.