The definition of blaspheme is to use God's name to speak in an irreverent manner.(verb)
When you slam your finger in a drawer and shout "G*d darn it!" this is an example of a time when you blaspheme.
See blaspheme in Webster's New World College Dictionary
Origin: ME blasfemen < OFr blasfemer < LL(Ec) blasphemare < Gr blasphēmein, to speak evil of, in LGr(Ec), blaspheme < blas- (< ?) + phēmē, utterance: see fame
See blaspheme in American Heritage Dictionary 4
verb blas·phemed, blas·phem·ing, blas·phemes verb, transitive
Origin: Middle English blasfemen
Origin: , from Old French blasfemer
Origin: , from Late Latin blasphēmāre
Origin: , from Greek blasphēmein
Origin: , from blasphēmos, evil-speaking, blasphemous; see bhā-2 in Indo-European roots.
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