[f. ASTONISH v. + -ER1.] He who or that which astonishes: see quot.
1871. Ringwalt, Encycl. Print., 20. Better known as the Exclamation Point. Printers term it the Astonisher, and … the Scarer.
1881. Times, 27 Oct., 6/6. This was a true Hibernian astonisher.
