Frigging is a vulgar slang term defined as emphasize upset, anger or annoyance.(interjection)
When you slam your finger in a door, this is an example of a situation where you might say "this frigging door!"
See frigging in Webster's New World College Dictionary
Origin: prp. of vulgar frig, to copulate, orig. to rub, prob. ult. < L fricare, to rub: see friable
See frigging in American Heritage Dictionary 4
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