It's certainly a perplexing question.

Tom is perplexed.

Then I, with stammering accents, intercede, / and, sore perplext, these broken words outthrow / to calm her transport:

We were perplexed by the crossword puzzle clue.

Mary was perplexed by Tom's odd behavior.

I think that Tom is perplexed.

What makes it so plausible to assume that hypocrisy is the vice of vices is that integrity can indeed exist under the cover of all other vices except this one. Only crime and the criminal, it is true, confront us with the perplexity of radical evil; but only the hypocrite is really rotten to the core.

I was perplexed.

He laughed heartily at my perplexity.

Sami was perplexed by Layla's request.