Strong's #8563: tamruwr (pronounced tam-roor')

from 4843; bitterness (plural as collective):--X most bitter(-ly).

Brown-Driver-Briggs Hebrew Lexicon:

ּּ

tamrûr

1) bitterness

Part of Speech: noun masculine

Relation: from H4843

Usage:

This word is used 3 times:

 

Jeremiah 6:26: "make thee mourning, as for an only son, most bitter lamentation: for the spoiler shall suddenly"
Jeremiah 31:15: "was heard in Ramah, lamentation, and bitter weeping; Rachel weeping for"
Hosea 12:14: "Ephraim provoked him to anger most bitterly: therefore shall he leave his blood upon him, and his reproach shall his Lord"