mystify

verb

mys·​ti·​fy ˈmi-stə-ˌfī 

mystified; mystifying

transitive verb

1

: to perplex the mind of : bewilder

I was completely mystified by his reaction.

2

: to make mysterious or obscure

mystify an interpretation of a prophecy

mystifier

ˈmi-stə-ˌfī(-ə)r 

noun

mystifyingly

ˈmi-stə-ˌfī-iŋ-lē 

adverb

Synonyms of mystify

• perplex
• confuse
• bewilder
• baffle
• puzzle
• befuddle

Examples of mystify in a Sentence

The cause of the disease mystified doctors for many years.

The magician has been mystifying his audiences for years with his amazing tricks.

Recent Examples on the Web

There are few people in the world who know the mystifying experience of being a child star as well as Brandy. —Taijuan Moorman, USA Today, 31 Mar. 2026

And then there’s the mystifying whiff of slop. —Brittany Allen, Literary Hub, 31 Mar. 2026

Based on the Don Winslow novella, Crime 101 follows an elusive jewel thief (Hemsworth) whose string of heists along the 101 freeway have mystified police. —Anthony D'alessandro, Deadline, 30 Mar. 2026

The idea that these enormities wouldn’t have negative electoral ramifications is mystifying. —Chicago Tribune, 27 Mar. 2026

Word History

Etymology

borrowed from French mystifier "to hoodwink, dupe," from Greek mýstēs "person initiated (into a religious cult)" + French -ifier -ify — more at mystic entry 1

Note: French mystifier was used by 18th-century literati in the context of elaborate practical jokes in which some pseudo-magical procedure would be performed on the subject of the joke as a sort of mock initiation. Such a joke is described by the playwright Charles-Simon Favart (1710-92) in a letter of June 24, 1760, apparently the earliest known occurrence of the verb: one Poinsinet is persuaded that the application of a magic ointment has made him invisible and he then becomes the butt of various jests. According to Favart, Poinsinet was dubbed le mystifié (presumably, "one made an initiate") as a result of the jests, which he refers to collectively as la mystification. (See Mémoires et correspondances littéraires, dramatiques et anecdotiques de C.S. Favart, tome 1, Paris, 1808, p. 50-52.) The meaning of the English word has been influenced by mystery entry 1, mystical, etc.

First Known Use

1814, in the meaning defined at sense 1

Rhymes for mystify

• abscissae
• alibi
• alkali
• alumni
• amoebae
• amplify
• annuli
• beautify
• brachii
• butterfly
• calculi
• certify

Kids Definition

mystify

verb

mys·​ti·​fy ˈmis-tə-ˌfī 

mystified; mystifying

: to confuse thoroughly the understanding of : perplex

mystified by his behavior

mystification

ˌmis-tə-fə-ˈkā-shən

noun