Strong’s Hebrew
H7188 — qashach
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
קָשַׁח
qashach — pronounced kaw-shakh
a primitive root; to be (causatively, make) unfeeling:--harden.
2 occurrences in the KJV.
Job 39:16
She is hardened against her young ones, as though they were not hers: her labour is in vain without fear;
Isaiah 63:17
O LORD, why hast thou made us to err from thy ways, and hardened our heart from thy fear? Return for thy servants’ sake, the tribes of thine inheritance.