testamentary trust testamentary • testamentate · · · Info · Definitions · Characters · · testamentary trust · · Text Common · · Latin · · Scripts 18 · · Length 6 · · Syllables Definitions · · · (noun) a trust that is created under a will and that becomes active after the grantor dies. Synonyms: testamentary trust. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 m latin small letter m U+006D n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079