She wore a puzzled expression as she tried to solve the riddle.
perplexed look
Frequency:
50
%
He had a perplexed look on his face as he tried to figure out the math problem.
flustered response
Frequency:
45
%
Her flustered response indicated that she was caught off guard by the question.
Idiomatic Expressions for befuddled
Phrase: Befuddled state
Meaning: A state of being confused or disoriented
Usage: After getting lost in the unfamiliar city, he found himself in a befuddled state as he tried to figure out his way back.