Definitions

mysterious

[mi-steer-ee-uhs] / mɪˈstɪər i əs /

ADJECTIVE

obscure, puzzing, suggesting a mystery

Synonyms

STRONGEST

baffling cryptic curious dark enigmatic inexplicable inscrutable magical mystical mystifying obscure perplexing puzzling secretive strange unknown weird

WEAK

abstruse alchemistic arcane astrological cabalistic covert difficult eldritch enigmatical equivocal esoteric furtive hidden impenetrable incomprehensible insoluble necromantic occult oracular recondite sphinxlike spiritual subjective symbolic transcendental uncanny unfathomable unknowable unnatural veiled

Antonyms

STRONGEST

apparent bright clear comprehendible comprehensible evident familiar intelligible known normal obvious plain regular usual visible

WEAK

public straightforward tangible unmysterious

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.

He described spotting mysterious "orange orbs flaring up and down" when investigating "loud thuds heard in the mountains" on a test range where others had spotted UFOs in preceding days.

From BBC • May 22, 2026

The mysterious finances of Musk’s company were detailed this week in SpaceX’s IPO filing, which is far more bonkers than financial paperwork has any right to be.

From The Wall Street Journal • May 22, 2026

Aging research is entering a new phase as scientists rethink one of the body's most mysterious cell types: senescent cells, often nicknamed "zombie cells."

From Science Daily • May 22, 2026

Not too long ago in this very galaxy, audiences watched a helmeted bounty hunter meet a mysterious big-eyed alien toddler on their TVs, and “Star Wars” was changed forever.

From Los Angeles Times • May 21, 2026

Could she be jealous of all this tender attention lavished on the Incorrigibles, who, despite their adorable eccentricities and mysterious background, were really perfect strangers to Miss Mortimer?

From "The Interrupted Tale" by Maryrose Wood

Vocabulary lists containing mysterious

Purple Hibiscus

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It's All a Blur: Synonyms for "Unclear"

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Schooled

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