say it: suhk-SES-ur
successor is a noun meaning "a person who follows next in order". It carries 3 recorded senses.
a person who follows next in order
“he was President Lincoln's successor”
a thing or person that immediately replaces something or someone
a person who inherits some title or office
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for successor come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.