mystérieux
French, adjective/mis.te.ʁjø/
mystérieux is a French adjective meaning “mysterious” (English Wiktionary, September 2026). The French Wiktionary (Wiktionnaire) defines it as “Qui contient quelque mystère, quelque secret, quelque sens caché. Se dit proprement en matière de religion”.
What does mystérieux mean in English?
adjective
- 1
mysterious
Source: English Wiktionary, French section, dump of September 2, 2026 (CC BY-SA 4.0).
How French dictionaries define it
adjective: 1. Qui contient quelque mystère, quelque secret, quelque sens caché. Se dit proprement en matière de religion. 2. Se dit en parlant des affaires humaines. 3. Qui fait mystère de beaucoup de choses et souvent de choses qui n’en valent pas la peine.
The definition in the French Wiktionary (Wiktionnaire), in French.
Source: French Wiktionary (Wiktionnaire), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of mystérieux
- mystérieuse feminine
- mystérieuses feminine plural
Source: English Wiktionary and French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce mystérieux?
- /mis.te.ʁjø/
- \mis.te.ʁjø\
Sources: English Wiktionary, French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
English words that translate to mystérieux
Source: the translation tables of the English Wiktionary, dump of September 2, 2026.
How common is mystérieux in French?
mystérieux appears 10 times per million words in written French.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).