IPA: /ˈprɛdɪˌsɛsər/
KK: /ˈprɛdɪˌsɛsər/
A person or thing that came before another in time or position, especially someone who held a job or role before someone else.
The new CEO has big shoes to fill after the impressive work of her predecessor.
Predecessor → It is formed from "pre-" (meaning before) and "decessor" (from Latin "cedere", meaning to go or yield). The word refers to someone who has gone before in a position or role, hence a predecessor is one who precedes another.
Think of someone who has 'gone before' ('pre-') in a role or position — that's what a predecessor is.