One of the mysteries of the English language finally explained.
1Of, characterized by, or suggestive of, hell-fire; fuelled by evil.
2As an intensive: terrible, ‘damned’. Compare "all-fired [adverb]". Now rare (chiefly US in later use).
As an intensive: very, extremely, ‘damned’.
Mid 17th century. From hell-fire + -ed. With use as adverb compare slightly later hell-fire.
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