IPA: /səkˈsɛsə/
KK: /səkˈsɛsər/
A person or thing that comes after another in a position, role, or title.
The new CEO is the successor to the previous leader of the company.
Successor → It is formed from "successus" (meaning outcome or result) and "-or" (meaning one who). The word "successor" refers to one who follows or comes after, particularly in a position or role.
Think of someone who is the 'outcome' ('successus') of a previous person's role — that's why a successor is someone who follows in that role.