bewildered or confused: a bemused expression on his face.

What is bemusement definition?

1 : marked by confusion or bewilderment : dazed … he was fumbling with the sheets, and looking down at them with a slightly bemused expression as though the stuff before him was in a foreign language …— Robert Penn Warren. 2 : lost in thought or reverie …

What does it mean to disconcert someone?

transitive verb. 1 : to throw into confusion disconcerting their plans. 2 : to disturb the composure of were disconcerted by his tone of voice.