Its main characteristic is perhaps best hit off by Charles Lamb when he calls it "genteel."
These men and their followers were never weary of ridiculing the timid caution of the aged statesman who sacrificed everything to perpetuate an inglorious peace and derisively nicknamed his adherents " Night-caps " (a term subsequently softened into " Caps "), themselves adopting the sobriquet " Hats," from the threecornered hat worn by officers and gentlemen, which was considered happily to hit off the manly self-assertion of the opposition.
Ironically, the first hit off her Back To Black album is entitled, Rehab.