The situation left him perplexed.

He laughed heartily at my perplexity.

Sami was perplexed by Layla's request.

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

Thus while they waver and, perplex with doubt, / urge diverse counsels, and in parts divide, / lo, from the citadel, foremost of a rout, / breathless Laocoon runs, and from afar cries out: / 'Ah! wretched townsmen! do ye think the foe / gone, or that guileless are their gifts? O blind / with madness! Thus Ulysses do ye know?'"

If I am rich in something, it is in perplexities and not in certainties.

Tom asked me a perplexing question.

He was perplexed at the unexpected result.

Needless to say, the Fifth Men had early mastered all those paradoxes of physical science which had so perplexed the First Men. Needless to say, they had a very complete knowledge of the geography of the cosmos and of the atom. But again and again the very foundations of their science were shattered by some new discovery, so that they had patiently to reconstruct the whole upon an entirely new plan. At length, however, with the clear formulation of the principles of psycho-physics, in which the older psychology and the older physics were held, so to speak, in chemical combination, they seemed to have built upon the rock. In this science, the fundamental concepts of psychology were given a physical meaning, and the fundamental concepts of physics were stated in a psychological manner. Further, the most fundamental relations of the physical universe were found to be of the same nature as the fundamental principles of art. But, and herein lay mystery and horror even for the Fifth Men, there was no shred of evidence that this aesthetically admirable cosmos was the work of a conscious artist, nor yet that any mind would ever develop so greatly as to be able to appreciate the Whole in all its detail and unity.

Mary was perplexed by Tom's odd behavior.