a person who makes a will.
a person who has died leaving a valid will.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use testator in a sentence
After the testator's death the corporation was authorized by statute to increase its capital stock.
The blood of sacrifice was typical at once of the blood of the Mediator, and of his death as the great testator.The Ordinance of Covenanting | John Cunningham
The question assumes this form: did the testator at the time he executed his will have sufficient mental capacity to do it.
A testator may write his own will, indeed to do so would be a good test of will-making capacity.
Thus, should a person mentioned as legatee die before the testator, the legacy would be invalid.
British Dictionary definitions for testator
a person who makes a will, esp one who dies testate
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012