Strong’s Hebrew
H1727 — duwb
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
דּוּב
duwb — pronounced doob
a primitive root; to mope, i.e. (figuratively) pine:-- sorrow.
1 occurrence in the KJV.
Leviticus 26:16
I also will do this unto you; I will even appoint over you terror, consumption, and the burning ague, that shall consume the eyes, and cause sorrow of heart: and ye shall sow your seed in vain, for your enemies shall eat it.