Tarnation is a euphamism for "damnation" or even "eternal damnation" just like darn is a euphamism for damn or as heck is to hell. It is used to show disgust
Synonyms for tarnation
On this page, you will find 30 slang terms related to tarnation. Some of the top words include: pyuk, Ugh, oh snap, molehead, Eat a dick, and 25 more.