blasphemous

UK: /ˈblæsfəməs/ US: /ˈblæsfəməs/ ,(blas′fə məs)

WordReference Random House Learner's Dictionary of American English © 2025

blas•phe•mous /ˈblæsfəməs/   adj. 

1. saying or committing blasphemy:
   blasphemous preachings.

blas•phe•mous•ly, adv. 
blas•phe•mous•ness, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2025

blas•phe•mous  (blas′fə məs), adj. 

1. uttering, containing, or exhibiting blasphemy;
   irreverent;
   profane.

• Greek blásphēmos defaming, speaking evil, equivalent. to blá(p)s(is) harm, evil (blab- harm + -sis -sis; compare bláptein to harm) + -phēmos speaking, derivative of phé̄mē speech; see -ous
• Late Latin blasphēmus
• 1525–35

blas′phe•mous•ly, adv. 
blas′phe•mous•ness, n. 
Synonyms

sacrilegious, impious, irreligious; apostate, iconoclastic.

Collins Concise English Dictionary © HarperCollins Publishers::

blasphemous / ˈblæsfɪməs/ adjective

1. expressing or involving impiousness or gross irreverence towards God, a divine being, or something sacred

Etymology: 15th Century: via Late Latin, from Greek blasphēmos evil-speaking, from blapsis evil + phēmē speech