φθείρω (phtheírōfthi'-roverbto destroy)
[Grk] φθείρω LN: 20.23, 20.39, 88.266 GK: G5780 Hebrew: בָּקַק, חָבַל, נָבֵל, נוּס, שָׁחַת
Derivation: probably strengthened from φθίω (to pine or waste);
Strong's: properly, to shrivel or wither, i.e. to spoil (by any process) or (generally) to ruin (especially figuratively, by moral influences, to deprave)
KJV: --corrupt (self), defile, destroy.