Strong’s Hebrew
H8563 — tamruwr
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
תַּמְרוּר
tamruwr — pronounced tam-roor
from 4843; bitterness (plural as collective):--X most bitter(-ly). see H04843
3 occurrences in the KJV.
Jeremiah 6:26
O daughter of my people, gird thee with sackcloth, and wallow thyself in ashes: make thee mourning, as for an only son, most bitter lamentation: for the spoiler shall suddenly come upon us.
Jeremiah 31:15
Thus saith the LORD; A voice was heard in Ramah, lamentation, and bitter weeping; Rahel weeping for her children refused to be comforted for her children, because they were not.
Hosea 12:14
Ephraim provoked him to anger most bitterly: therefore shall he leave his blood upon him, and his reproach shall his LORD return unto him.