Breadcrumb Home > Dictionary > Index A astonish: Meaning and Definition of Find definitions for: as•ton•ish Pronunciation: (u-ston'ish), [key] — v.t. to fill with sudden and overpowering surprise or wonder; amaze: Her easy humor and keen intellect astonished me. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: astonish (Thesaurus) astonied astonishing ✖ Related Content Daily Word Quiz: sophism Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language