sacrilegiousEnglishOxford New American Dictionarysacrilegious /ˌsakrəˈlijəs, ˌsækrəˈlɪdʒəs / ▸ adjective involving or committing sacrilege: a sacrilegious act it seems sacrilegious to say this, but it's really not that great a movie. – DERIVATIVES sacrilegiously /ˌsakrəˈlijəslē/ adverb