'Fierce' in the Bible

The battle that day was extremely fierce, and Abner and the men of Israel were defeated by David’s soldiers.

As for me, even though I am the anointed king, I have little power today. These men, the sons of Zeruiah, are too fierce for me. May the Lord repay the evildoer according to his evil!”

Moreover, Hushai said, “You know your father and his men, that they are mighty men and they are fierce, like a bear robbed of her cubs in the field. And your father is an expert in warfare, and will not spend the night with the people.