IPA: /ˌsækrɪˈlɪdʒəsli/
KK: /sækrɪˈlɪdʒəsli/
In a way that shows disrespect or irreverence towards something sacred or religious.
He spoke sacrilegiously about the ancient traditions of the church.
**Sacrilegiously** → It is formed from "sacrilegium" (from Latin, meaning theft of sacred things) and the adverbial suffix "-ly" (meaning in a manner). The word "sacrilegiously" means in a manner that involves the violation or theft of something sacred.
Think of 'sacrilegium' as referring to the 'theft of sacred things' — so when something is done 'sacrilegiously', it is done in a way that violates or disrespects what is sacred.