seal off seal of approval • seal oil · · · Info · Definitions · Synonyms · Characters · · seal off · · Text Common · · Latin · · Scripts 8 · · Length 2 · · Syllables Definitions · · · (verb) make tight; secure against leakage. Synonyms: seal, seal off. Example: "Seal the windows." · · Verb Definition 1 (verb) impose a blockade on. Synonyms: blockade, seal off. · · Verb Definition 2 Synonyms · · · seal · · Synonym 1 blockade · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 l latin small letter l U+006C o latin small letter o U+006F s latin small letter s U+0073