Merriam-Webster Logo
SINCE 1828
Menu
×

An Encyclopædia Britannica Company

Thesaurus

mystery

noun

Synonyms and Antonyms of mystery

  1. something hard to understand or explain why my sister married that guy is still a mystery to my parents Synonyms closed book, conundrum, enigma, head-scratcher, mystification, puzzle, puzzlement, riddle, secret Related Words brainteaser, case, challenge, knot, matter, perplexity, poser, problem, stumper, trouble

Explore Merriam-Webster

alt-5970fcc51169b
Trending: An Interview Full of 'Non sequiturs'
video-title-words-of-the-year-1066
Words of the Year: 1066
ghost-being-disinvited-from-party
'Disinvite' or 'Uninvite'?
emoji-the-quiz
The Emoji Quiz

Learn More about mystery

  1. Dictionary: Definition of mystery Spanish Central: Translation of mystery Nglish: Translation of mystery for Spanish speakers Britannica English: Translation of mystery for Arabic speakers Britannica.com: Encyclopedia article about mystery

Seen and Heard

What made you want to look up mystery? Please tell us where you read or heard it (including the quote, if possible).

show hide

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

gauche

play

lacking social experience or grace

Get Word of the Day daily email!

TRENDING NOW

  1. non sequitur “It does not follow”

  2. admiral's mast A massive search ends with an 'admiral's mast'.

  3. calumny 'An untrue statement that is made to damage someone's reputation'

  4. kakistocracy Frustrated Twitter users have been searching for this word.

  5. bona fide Made in good faith

SEE ALL

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

image386126722
Words and Phrases That Come from the Dinner Table

Fill your plate with these surprising food words

ghost-being-disinvited-from-party
'Disinvite' or 'Uninvite'?

A disinvited guest is an uninvited problem

alt-596f730ceb5ae
Words We're Watching: 'Scoby'

Kombucha lovers unite.

alt-596e1a928254c
Words We're Watching: 'Fidget Spinner'

Don't fight the fad

Ask the Editors

video-title-words-of-the-year-1066
Words of the Year: 1066

Or, Why Pig Meat is Called 'Pork' and Cow Meat is Called 'Beef'

payday
How Often Is 'Biweekly'?

Don't get us started on 'bimonthly'

video-irregardless-grammar-peeve-blend-of-the-synonyms-irrespective-and-regardless
Irregardless

It is in fact a real word (but that doesn't mean you should use it).

video-moose-goose-weird-plurals
Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

Word Games

emoji-the-quiz
The Emoji Quiz

Think you’re an emoji 👓 expert? Let’s see 🤔

Take the quiz
image941935269
A Game of Thrones Word Quiz

In the Game of Thrones quiz, you learn some new vocabulary. (It’s quite safe, really. You will not die.)

Take the quiz
Name That Thing
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Take the quiz
Syn City
Syn City

Build a city of skyscrapers—one synonym at a time.

Play the game