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mysteries

NOUN

puzzle, secret

Synonyms

STRONGEST

conundrum enigma problem question riddle secrecy subtlety thriller

STRONG

abstruseness charade chiller cliffhanger crux cryptogram difficulty grabber inscrutability mystification occult oracle perplexity poser puzzlement rebus rune sphinx stickler stumper teaser twister whodunit why

WEAK

brainteaser braintwister closed book inscrutableness mindboggler sixty-four-thousand-dollar question tough nut to crack

Antonyms

WEAK

known understanding

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.

"The origins and acceleration mechanisms of ultrahigh-energy cosmic rays have been among the biggest mysteries in the field for more than 60 years, since the first example was reported," Murase said.

From Science Daily • Jun. 9, 2026

“His & Hers” on Netflix, “Bookish” on PBS and a pair of mysteries from Harlan Coben, on CBS and Netflix, offer different kinds of twists and puzzles to solve.

From Los Angeles Times • Jun. 8, 2026

“They” and “them” have introduced new grammatical mysteries for the older students.

From The Wall Street Journal • May 30, 2026

“Some mysteries in archeology are so significant,” he adds, “that it takes generations to solve them.”

From The Wall Street Journal • May 26, 2026

Despite all the days’ mysteries, riddles, and conundrums, the realization that, in Simon, she had found a true friend, was enough to cheer Penelope to the core.

From "The Hidden Gallery" by Maryrose Wood