mazel tov Syllabification: (ma·zel tov)Pronunciation: /ˈmäzəl ˌtôv, ˌtôf/Definition of mazel tov exclamation a Jewish phrase expressing congratulations or wishing someone good luck. Origin:from modern Hebrew mazzāl ṭōḇ, literally 'good star'mazel tov in other Oxford dictionaries Definition of mazel tov in the British & World English dictionary