flummoxed

Definitions

Bewildered or perplexed.

Utterly confused or unable to understand.

Examples

The complex instructions left the new employee completely flummoxed.

I was utterly flummoxed by the sudden change in the project's requirements.

Synonyms

baffled bewildered confused perplexed puzzled mystified dumbfounded

Antonyms

clear enlightened certain composed unconfused understanding sure