forbidding Syllabification: (for·bid·ding)Pronunciation: /fərˈbidiNG, fôr-/Translate forbidding | into French | into German | into Italian Definition of forbidding adjective unfriendly or threatening in appearance:a grim and forbidding buildingDerivatives forbiddingly adverb forbidding in other Oxford dictionaries Definition of forbidding in the British & World English dictionary