SANCTITY Meaning of SANCTITY in English ■ noun ( plural sanctities ) 1》 holiness; saintliness. 2》 ultimate importance and inviolability.OriginME: from OFr. sainctite , reinforced by L. sanctitas , from sanctus 'holy'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004