Strong’s Greek
G2726 — katepheia
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
κατήφεια
katepheia — pronounced kat-ay'-fi-ah
from a compound of 2596 and perhaps a derivative of the base of 5316 (meaning downcast in look); demureness, i.e. (by implication) sadness:--heaviness. see GREEK for 2596 see GREEK for 5316
1 occurrence in the KJV.
James 4:9
Be afflicted, and mourn, and weep: let your laughter be turned to mourning, and your joy to heaviness.