- The definition of mazel tov is the Hebrew expression of congratulations.
An example of mazel tov is what is said after a Jewish wedding.
Mazel tov is what would be said at a Jewish wedding.Licensed from iStockPhoto
Origin: Heb (often via Yiddish) from māzal, luck plush tōv, good
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also ma·zal tovinterjection
Origin: Mishnaic Hebrew mazzāl ṭôb, good luck : mazzāl, constellation, destiny (ultimately from Akkadian manzaltu, mazzaztum, position of a star, from izuzzu, to stand; see ḏwḏ1 in Semitic roots) + ṭôb, good; see ṭyb in Semitic roots.