Strong's #393: 'akzar (pronounced ak-zawr')

from an unused root (apparently meaning to act harshly); violent; by implication deadly; also (in a good sense) brave:--cruel, fierce.

Brown-Driver-Briggs Hebrew Lexicon:

'akzâr

1) cruel, fierce

Part of Speech: adjective

Relation: from an unused root (apparently meaning to act harshly)

Usage:

This word is used 4 times:

 

Deuteronomy 32:33: "Their wine is the poison of dragons, and the cruel venom of asps."
Job 30:21: "Thou art become cruel to me: with thy strong thou opposest thyself against"
Job 41:10: "None is so fierce that who then is able to stand before"
Lamentations 4:3: "to their young ones: the daughter of my people is become cruel, like the ostriches in the wilderness."