Strong's G263 — ἀμάραντος (adjective)
amarantos (am-ar'-an-tos) adj.
1. unfading
2. (by implication) perpetual
[from G1 (as a negative particle) and a presumed derivative of G3133]
KJV: that fadeth not away 
Root(s): G1, G3133 
Hebrew root: μαραίνω
Occurrences: 1