Other forms: dubbed; dubs; dubbing
If your brother is obsessive about doing the laundry, then you might dub him the "Scion of the Spin Cycle" or the "Dean of Detergent," meaning you’ve given him a funny nickname that’s inspired by his personal quirks.
The verb dub traces back to the French word adober, meaning “equip with armor,” and originally referred to making someone a knight. Dub still carries that meaning, although now it's more likely to describe the giving out of titles of a different kind. Use this word when you give someone a playful nickname or an unofficial title based on some notable characteristic the person has, like dubbing your sister the "Queen of Shoes."