Strong's #2704: katphtheiro (pronounced kat-af-thi'-ro)
from 2596 and 5351; to spoil entirely, i.e. (literally) to destroy; or (figuratively) to deprave; --corrupt, utterly perish.
Thayer's Greek Lexicon:
́
kataphtheirō
1) to corrupt, deprave
1a) corrupted in mind
2) to destroy
2a) to be destroyed, to perish
Part of Speech: verb
Relation: from G2596 and G5351
Citing in TDNT: 9:93, 1259
Usage:
This word is used 2 times:
2 Timothy 3:8: "resist the truth: men of corrupt minds, reprobate concerning"
2 Peter 2:12: "speak evil of the things that they understand not; and shall utterly perish in their own corruption;"