The phrase "stricken dumb" is a powerful and evocative way to describe someone who is rendered speechless by a sudden shock or trauma. However, there are many other words and phrases that can be used to convey a similar sense of shock or disbelief. Some synonyms for "stricken dumb" might include "speechless," "stunned," "silent," "mute," "in shock," "paralyzed," "numb," and "dumbfounded." Each of these words brings its own unique connotations and nuances to the table, allowing writers to choose the perfect word to capture the exact mood or tone they are trying to convey.