blaspheme

[blas-feem, blas-feem] /blæsˈfim, ˈblæs fim/
verb (used with object), blasphemed, blaspheming.
1.
to speak impiously or irreverently of (God or sacred things).
2.
to speak evil of; slander; abuse.
verb (used without object), blasphemed, blaspheming.
3.
to speak irreverently of God or sacred things; utter impieties.
Origin
1300-50; Middle English (< Anglo-French) < Late Latin blasphēmāre < Greek blasphēmeîn to speak profanely, derivative of blásphēmos blasphemous
Related forms
blasphemer
[blas-fee-mer, blas-fee-, -fuh-] /blæsˈfi mər, ˈblæs fi-, -fə-/ (Show IPA), noun
unblasphemed, adjective
Synonyms
1. See curse.
British Dictionary definitions for blaspheme

blaspheme

/blæsˈfiːm/
verb
1.
(transitive) to show contempt or disrespect for (God, a divine being, or sacred things), esp in speech
2.
(intransitive) to utter profanities, curses, or impious expressions
Derived Forms
blasphemer, noun
Word Origin
C14: from Late Latin blasphēmāre, from Greek blasphēmein from blasphēmosblasphemous
Word Origin and History for blaspheme
v.

mid-14c., from Old French blasfemer "to blaspheme" (14c., Modern French blasphémer), from Church Latin blasphemare (also in Late Latin "revile, reproach"), from Greek blasphemein "to speak lightly or amiss of sacred things, to slander," from blasphemos "evil-speaking" (see blasphemy). A reintroduction after the original word had been worn down and sense-shifted to blame. Related: Blasphemed; blaspheming.