Testamentary (adjective)

Relating to or established by a testament or will.

Origin:

From testament + -ary, meaning related to or established by a testament or will.

Examples:

1. The testamentary trust was established according to the instructions in the will.
2. Testamentary capacity is the legal ability to make a will.
3. The testamentary disposition of the assets was a topic of much debate.
4. Testamentary gifts are those that are given through a will.
5. The testamentary guardian was appointed to take care of the children in accordance with the will.