Strong's G262 — ἀμαράντινος (adjective)
amarantinos (am-ar-an'-tee-nos) adj.
1. "amaranthine", a flower that never withers or fades
2. (by implication) fadeless, everlasting
[from G263]
KJV: that fadeth not away 
Root(s): G263 
Hebrew root: ἀμάραντος
Occurrences: 1