dumbfounded

Verb

Plain form dumbfound

Third-person singular dumbfounds

Past tense dumbfounded

Past participle dumbfounded

Present participle dumbfounding

1. The past tense and past participle of dumbfound.

Adjective

Positive dumbfounded

Comparative more dumbfounded

Superlative most dumbfounded

1. To be dumbfounded is to be shocked and lost for words.

   Nathan was left dumbfounded when he did not expect himself to score full marks for his science exams.