1. never to be broken, infringed, or dishonored; sacred and unbreakable

Examples

• The constitution guarantees certain inviolable rights to all citizens.
• Their friendship was based on an inviolable trust.
• The treaty established inviolable borders between the two nations.
• She considered her privacy to be inviolable.
• The sanctuary was declared an inviolable refuge for wildlife.
• His principles were inviolable, no matter the circumstances.