Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.
A person who writes and, if necessary, registers a will. The will states how and to whom the testator wants his/her property transferred after death. In addition to transferring property, the testator may specify how certain responsibilities are to be performed. For example, he/she may indicate who shall take care of the decedent's minor children, how they are to be educated, and so forth. Many advisers recommend writing a will to ensure that the testator's wishes are carried out. Rarely, a female testator is called a testatrix.