If someone's behaviour or actions are sacrilegious, they show great disrespect towards something holy or towards something that people think should be respected.
We suggested "A.M."; and after some hesitation, for my friend thought it perhaps sacrilegious, the slogan "A.M.! Amen!"我们提议叫“A.M.”，因为我朋友害怕这样会渎神，所以一番犹豫之后，才给出广告语：“A.M.！阿门！”
英英词典释义
Adjective
1. grossly irreverent toward what is held to be sacred;
"blasphemous rites of a witches' Sabbath""profane utterances against the Church""it is sacrilegious to enter with shoes on"