G5352 φθινοπωρινός (phthinopōrinós)

KJV renderings: whose fruit withereth
Strong's definition: akin to the base of G5351 (φθείρω)) and G3703 (ὀπώρα) (meaning late autumn); autumnal (as stripped of leaves)
Derivation: from derivative of (to wane;

From James Strong's public-domain dictionaries (G), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.