Confounded: a minced epithet equivalent to darned as a euphemism for damned.
The Century Dictionary (Public Domain)
Use "dog-goned" in a sentence
"Mary, ye needn't be skeered, jes res 'easy, I'll see hit's all es proper es eny meetin' or Sunday School an 'ef they don't like it, be dog-goned ef I don't make"
""I told his father Alfred would go off some day and then they'd all be dog-goned sorry they hadn't handled him different.""
""That's the worst of those dog-goned things," he exclaimed, scowling at the object blocking his way."