Strong’s Greek
G263 — amarantos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀμάραντος
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. see GREEK for 1 see GREEK for 3133
1 occurrence in the KJV.
1 Peter 1:4
To an inheritance incorruptible, and undefiled, and that fadeth not away, reserved in heaven for you,