FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

katphtheiro καταφθείρω — kat-af-thi'-ro — from 2596 and 5351; to spoil entirely, i.e. (literally) to destroy; or (figuratively) to deprave; --corrupt, utterly perish.

see GREEK for 2596

see GREEK for 5351