Origin: 1800–10; euphemism for damned, perhaps by construing dern dark, dreary (now obsolete) as an intensifier in phrases such as dern and dreary, dern and doleful
tame curse word, 1781, Amer.Eng. euphemism for damn, said to have originated in New England when swearing was a punishable offense; if so, its spread was probably infl. by 'tarnal, short for Eternal, as in By the Eternal (God), favorite exclamation of Andrew Jackson, among