Strong's #263: amarantos (pronounced am-ar'-an-tos)
from 1 (as a negative particle) and a presumed derivative of 3133; unfading, i.e. (by implication) perpetual:--that fadeth not away.
Thayer's Greek Lexicon:
̓́
amarantos
1) not fading away, unfading, perennial (See G262)
Part of Speech: adjective
Relation: from G1 (as a negative particle) and a presumed derivative of G3133
Usage:
This word is used 1 times:
1 Peter 1:4: "and undefiled, and that fadeth not away, reserved in heaven for"