1. causing someone to be shocked, confused, or unable to speak; astonishing or bewildering
Usage: informal; often used to describe surprising or perplexing situations

1. present participle of dumbfound; the act of shocking or confusing someone so much that they are unable to respond
Usage: informal; derived from dumbfound (to astonish or perplex)

Examples

• The dumbfoundering news left everyone speechless.
• She found the test questions absolutely dumbfoundering.
• His dumbfoundering announcement shocked the entire room.
• The magician's dumbfoundering trick amazed the audience.
• They were dumbfoundering the audience with their unexpected performance.
• The dumbfoundering complexity of the problem frustrated many students.
• His dumbfoundering behavior at the meeting raised eyebrows.