When you slam your finger in a drawer and shout "G*d darn it!" this is an example of a time when you blaspheme.
Origin of blaspheme
- Middle English blasfemen from Old French blasfemer from Late Latin blasphēmāre from Greek blasphēmein from blasphēmos evil-speaking, blasphemous bhā-2 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- Old French blaspheme, from Ecclesiastical Latin blasphēmō, from Ancient Greek βλασφημέω (blasfēmō).