Sacred
From The SpiritWiki
The adjective Sacred can be applied to any noun or verb representing a concern, link, relationship, etc. with Consciousness.
Examples
The sacred syllable hum (हुम्), when coupled with a visualization of aum (ॐ) aligns us with the highest and most powerful physical vibrations of Consciousness. It is thus a sacred syllable and a powerful preliminary invocation in mantras (मन्त्र).