adjective

1. consecrated to or belonging to the divinity or a deity; holy
2. of or connected with religion or religious rites a sacred song
3. regarded with the respect or reverence accorded holy things; venerated; hallowed
4. set apart for, and dedicated to, some person, place, purpose, sentiment, etc. sacred to his memory
5. secured as by a religious feeling or sense of justice against any defamation, violation, or intrusion; inviolate

Etymology: ME < pp. of sacren, to consecrate < OFr sacrer < L sacrare < sacer, holy < ? IE base *sak-, to sanctify, make a compact > ON sāttr, reconciled, Hittite šakliš, law, ritual