What does perplex mean?
Perplex is a formal verb meaning to leave someone puzzled or confused, especially through a difficult problem, unexpected result, or unclear situation. A question or piece of news may perplex an audience, while a person is described as being perplexed when unable to understand what is happening. The related adjective is now chiefly archaic, but it once conveyed the idea of something tangled, complicated, or intricately involved. Perplex is slightly more formal than puzzle and often suggests confusion caused by complexity rather than sheer surprise. It is transitive: it takes the person confused as its object, as in “the evidence perplexed the investigators,” and it can be followed by by with the source of confusion, as in “she was perplexed by the contradiction.” Its Latin ancestry reinforces the sense of entanglement, since the word developed from roots associated with weaving or folding together. The derived noun perplexity names a state of puzzlement, while perplexed and perplexing are the standard participial and adjectival forms. Perplex is especially useful when precision about tone matters because it conveys both intellectual difficulty and the expectation that an explanation should be available.
To cause someone to feel confused or uncertain, especially about a problem, situation, or piece of information that is difficult to understand.
"The unexplained discrepancy perplexed investigators across the country."
Usually transitive; a person is perplexed by something, while the thing causing the confusion perplexes that person.
Entangled, complicated, or intricately involved.
"The old gate was secured by a perplex tangle of vines."
Chiefly archaic and rare in contemporary usage.
From roots meaning “to weave thoroughly,” perplex imagines confusion as a knot too tangled to unravel.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does perplex come from?
Perplex entered English in the early 17th century from Latin perplexus, “entangled” or “involved,” the past participle of perplicere, “to weave together.” The prefix per- conveys thoroughness, while the underlying root refers to folding or weaving. This shared origin links perplex with Latin plexus and with the English words complex and complexity.
Related word forms
How perplex is actually used
Perplex is formal or neutral in register and is often used in contexts involving difficult problems, unexplained events, or apparent contradictions. The adjective is chiefly archaic and uncommon in modern English.
Easily confused with perplex
Perplex is the transitive verb meaning “to confuse someone”; perplexed is the participial adjective describing the person who is confused.