Strong’s Greek
G5467 — chalepos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
χαλεπός
chalepos — pronounced khal-ep-os'
perhaps from 5465 through the idea of reducing the strength; difficult, i.e. dangerous, or (by implication) furious:--fierce, perilous. see GREEK for 5465
2 occurrences in the KJV.
Matthew 8:28
And when he was come to the other side into the country of the Gergesenes, there met him two possessed with devils, coming out of the tombs, exceeding fierce, so that no man might pass by that way.
2 Timothy 3:1
This know also, that in the last days perilous times shall come.