From Longman Dictionary of Contemporary Englishsobriquetso‧bri‧quet /ˈsəʊbrɪkeɪ $ ˈsoʊ-/ (also soubriquet /ˈsuː-/) noun [countable] formal ALNAME OF A PERSONan unofficial title or name SYN nickname
Examples from the Corpus
sobriquet• His youngest son was known to Regency society by the sobriquet Poodle Byng.• Fortunately some of the neighbours intervened, and it was they who invented the sobriquet.• I became friendly with the woman in charge, a vast and haughty person who answered to the sobriquet Duchesse.• This sobriquet is a product of the sixteenth century.Origin sobriquet (1600-1700) French “light blow under the chin, nickname” 