Doggone is a soft, rather old American way to show you are a bit annoyed, or to make a feeling stronger, without using a real swear word. People say that doggone… before a thing that is bothering them, or doggone it when something goes wrong. Though actually, it is not always angry: a person can also say a doggone good pie, using it only to press on the feeling. It stands in for a much harder curse that uses God's name. Older speakers and country speech use it more than young city speakers. It is informal. You would not put it in a school essay, and you will hear it far more in American English than in British English.

「該死的」、「真是的」（美式口語；不是狗，是把更重的髒話改輕來說）