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have perplexed

  • present perfect
    of perplex.
    perplex
    verb (used with object)
    to cause to be puzzled or bewildered over what is not understood or certain; confuse mentally.

Example Sentences

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If it succeeds, Axiom might just crack problems that have perplexed mere humans for centuries.

From The Wall Street Journal ● Dec. 4, 2025

These fundamental questions of agency -- acting with purpose -- have perplexed some of the greatest minds in history including Sir Isaac Newton, Charles Darwin, Erwin Schrödinger and Niels Bohr.

From Science Daily ● Sep. 18, 2023

The drifting mats of seaweed have perplexed naturalists and sailors for centuries.

From Slate ● Jul. 16, 2023

These trends have perplexed Antarctic scientists, who are still debating the exact causes.

From Scientific American ● Apr. 20, 2022

Two precious villains—Carbon and Azote— They have perplexed me heretofore; but now The thing is plain enough.

From Graham's Magazine Vol XXXII. No. 3. March 1848 by Robert Taylor Conrad