testator
🇺🇸
/tes'teɪtə/
🇬🇧
/tes'teɪtə/
A person who writes a will, a document that says who gets what after they pass away.
The testator decided to leave her house to her oldest son in the will.
遺言執行人は遺言書で彼女の家を最も年上の息子に残すことに決めた。