sacrilegiousEnglishOxford Dictionary of Englishsacrilegious /ˌsakrɪˈlɪdʒəs / ▸ adjective involving or committing sacrilege: a sacrilegious act it seems sacrilegious to say this, but it's really not that great a film. – DERIVATIVES sacrilegiously /ˌsakrɪˈlɪdʒəsli/ adverb