be perplexed

See: misjudge
References in classic literature ?
The financial difficulty of it, presenting also a human problem, was solved by a mind much too simple to be perplexed by anything in the world except men's idle talk for which it was not adapted.
To be hustled, and jostled, and moved on; and really to feel that it would appear to be perfectly true that I have no business here, or there, or anywhere; and yet to be perplexed by the consideration that I AM here somehow, too, and everybody overlooked me until I became the creature that I am
I don't think there is anything for me to be perplexed about.