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conundrum

American  
[kuh-nuhn-druhm] / kəˈnʌn drəm /

noun

  1. a riddle, the answer to which involves a pun or play on words, as What is black and white and read all over? A newspaper.

  2. anything that puzzles.


conundrum British  
/ kəˈnʌndrəm /

noun

  1. a riddle, esp one whose answer makes a play on words

  2. a puzzling question or problem

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of conundrum

First recorded in 1590–1600; pseudo-Latin word of obscure origin

Explanation

The tricky word conundrum is used to describe a riddle or puzzle, sometimes including a play on words or pun. One of the most famous conundrums is the riddle of the Sphinx, famously in the play Oedipus the King by Sophocles. Oedipus encounters the Sphinx, a mythical beast, who asks him, "What walks on four legs in the morning, two in the afternoon, and three in the evening?" The answer is "A person": crawling as a child, walking as an adult, and using a cane in old age. The scary thing is that if the Sphinx asked you the riddle and you didn't know, she'd eat you!

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Vocabulary lists containing conundrum

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In either case, positivity poses a dramatic conundrum, being too quiet or too sentimental.

From The Wall Street Journal • May 29, 2026

A broader conundrum is whether the Office of the High Representative itself has a future and, if not, where that would leave Bosnia.

From BBC • May 11, 2026

The real conundrum for Pakistan's economy has always been finding drivers for GDP growth, and that challenge remains.

From Barron's • Apr. 21, 2026

"Until recently, while stellar rotation was thought to be part of solving this conundrum, limited computing abilities prevented us from quantitatively testing the hypothesis," says Falk Herwig, principal investigator and director of ARC.

From Science Daily • Mar. 24, 2026

In that conundrum would lie the deeper injury the controversy caused the university in general and the Rad Lab in particular.

From "Big Science" by Michael Hiltzik

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