astonisher|əˈstɒnɪʃə(r)| [f. astonish v. + -er1.] He who or that which astonishes: see quot. 1871Ringwalt Encycl.Print. 20 Better known as the Exclamation Point. Printers term it the Astonisher, and..the Scarer.1881Times 27 Oct., A true Hibernian astonisher.