A person’s nickname:she was a vast and haughty person who answered to the sobriquet ‘Duchesse’...
His on-field partnership with fellow Galway great Frank Stockwell saw the pair earn the sobriquet of the ‘Terrible Twins’ - a name borne of their almost telepathic understanding.
John Mullan discusses Charles Edward Stuart's sobriquets, but we should remember that most of his followers in 1745 were Gaelic-speakers.
He laughs when asked about his new sobriquet of Britain's richest man.
Origin
Mid 17th century: French, originally in the sense 'tap under the chin', of unknown origin.