Strong's G5351 (Greek)

Greek: φθείρω (phtheírō)

Pronunciation: fthi'-ro

Derivation: probably strengthened from φθίω (phthíō) (to pine or waste);

Definition: properly, to shrivel or wither, i.e. to spoil (by any process) or (generally) to ruin (especially figuratively, by moral influences, to deprave)

KJV Renderings: corrupt (self), defile, destroy

Sources. The definition, derivation and KJV renderings are James Strong's own wording from Strong's Exhaustive Concordance of the Bible (1890) — public domain. The numbered senses and the Hebrew–Greek cross-references are the editorial work of the OpenScriptures Strong's dictionary, licensed CC BY-SA 3.0; their sense-outline conventions match the Outline of Biblical Usage (Online Bible, Larry Pierce), noted as a convention match rather than a documented claim.