/ Dictionary / Index T thunderstruck: Meaning and Definition of Find definitions for: thun•der•struck Pronunciation: (thun'dur-struk"), [key] — adj. overcome with consternation; confounded; astounded: He was thunderstruck by the news of his promotion. struck by a thunderbolt. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thunderstruck (Thesaurus) thunderstroke thundery Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language