sobriquetnoun [ C ]
also soubriquet uk/ˈsəʊ.brɪ.keɪ/us/ˈsoʊ.brə.keɪ/formala name given to someone or something that is not their or its real or official name:
These charms have earned the television show's host the sobriquet "the thinking woman's heartthrob".
Synonym
nickname