caveator
/ˈkæviˌeɪtər/
noun
- A person who makes a formal warning or objection, especially in legal matters such as a will or probate.
- The lawyer advised her client to act as a caveator to protect his inheritance rights.
- The caveator filed an objection to the will, claiming it was signed under pressure.
- In probate court, the caveator argued that the deceased was not of sound mind.