dumbly
Definitions
In a manner lacking intelligence or good judgment.
In a silent or speechless manner, often due to shock or confusion.
Examples
He stared dumbly at the screen, unable to process the shocking news he had just received.
The dog sat dumbly by the door, waiting for his owner to return home.
Synonyms
stupidly foolishly vacantly blankly senselessly inarticulately unintelligently
Antonyms
intelligently smartly wisely cleverly brightly articulately shrewdly