Incapable of undergoing physical corruption; that cannot decay or perish; everlasting, eternal.

Imputrescible; not subject to decomposition; not liable to rot or decay.

Incapable of corruption; incorruptible.

(un-, prefix1 affix 1b.)

Incapable of being impaired; unfading.

Not subject to corruption; incorruptible.

Not subject to putrefaction or decomposition; incorruptible.

= indecomposable, adj. Also const. by.

(un-, prefix1 affix 1b.)

Esp. of a foodstuff: not subject to significant deterioration or loss of quality over time.

= undecomposable, adj.