relaxation

noun

1. The act of relaxing or the state of being relaxed; the opposite of stress or tension; the aim of recreation and leisure activities.
2. A diminution of tone, tension, or firmness; specifically in pathology: a looseness; a diminution of the natural and healthy tone of parts.“relaxation of the soft palate”
3. Remission or abatement of rigor.
4. Remission of attention or application.“relaxation of efforts”