adjective
or im·mar·ces·si·ble |i(m)ˌmär|sesəbəl
Etymology: Late Latin immarcescibilis, from Latin in- in- (I) + Late Latin marcescibilis withering, from Latin marcescere to wither, fade away + -ibilis -ible — more at marcescent
: imperishable , indestructible
• im·mar·ces·ci·bly or im·mar·ces·si·bly -blē adverb