I was dumbfounded when she announced she was leaving the company.

He dumbfounded the committee with his unexpected evidence.

The magician's final illusion was such a dumbfounder that the audience sat in stunned silence.

They planned to dumbfounder the judges with an unorthodox argument that left everyone speechless.

Many theater directors called the unconventional actors dumbfounders, amazed at how a single gesture could silence the audience.

Her sudden announcement dumbfounds the entire committee.

The sudden announcement of the layoffs could dumbfound the entire staff.

Her sudden resignation was dumbfounding everyone in the office.

The magician kept dumbfoundering the audience with impossible escapes.

Her sudden announcement dumbfoundered everyone in the room.