testamental
Testamental is an English adjective with two primary senses. In legal usage it means pertaining to a will or testament. In religious and historical contexts it can mean pertaining to the Testaments, especially the Old and New Testaments of the Bible. The more common legal term is testamentary; testamental is rarer and appears mainly in older or scholarly writing.
Etymology and scope: The word derives from Medieval Latin testamentalis, from Latin testamentum “will, covenant, testament,”
Usage notes and examples: When describing a will, prefer “testamentary” (e.g., testamentary dispositions, testamentary trust). When
See also: testament, will, last will and testament, testamentary disposition, testamentary trust.