IPA: //koʊˈɛk.sə.tər//
KK: /koʊˈɛk.sə.tɚ/
A person who shares the responsibility of carrying out the instructions in a will or managing an estate after someone has died.
The coexecutor worked closely with the other executor to ensure the estate was settled properly.
Coexecutor → It is formed from "co-" (meaning together) and "executor" (from Latin "exsequi", meaning to carry out or perform). The word refers to someone who carries out a task together with another person.
Think of two people working 'together' ('co-') to 'carry out' ('executor') a task — that's what a coexecutor does.