noun
sobriquet
SOH-brih-kay/ˈsəʊbrɪkeɪ/
A nickname or descriptive name given to a person.
The boxer's robe displays the descriptive sobriquet Bear.

Etymology
French soubriquet meant both a nickname and a jest or quip. It is said to have literally meant “a chuck under the chin,” but its origin is unknown.
In context
… earned for him among the blacks on the field the terrible sobriquet of "White Harry."
More examples
- His teammates know him by the sobriquet “Speedy.”
- The biography explains how the general acquired his famous sobriquet.
- She dislikes the sobriquets that reporters invent for her.
Forms
sobriquet · sobriquets