Search Result for "strike dumb":
Wordnet 3.0

VERB (1)

1. render speechless, as by surprising or shocking;
- Example: "we were struck dumb by the candidate's announcement"



WordNet (r) 3.0 (2006):

strike dumb
    v 1: render speechless, as by surprising or shocking; "we were
         struck dumb by the candidate's announcement"