Verses with the word fierceness in the Apocrypha (2 verses):

Wisdom of Solomon 16:5
For when the horrible fierceness of beasts came upon these, and they perished with the stings of crooked serpents, thy wrath endured not for ever:

2 Maccabees 15:21
Maccabeus seeing the coming of the multitude, and the divers preparations of armour, and the fierceness of the beasts, stretched out his hands toward heaven, and called upon the Lord that worketh wonders, knowing that victory cometh not by arms, but even as it seemeth good to him, he giveth it to such as are worthy: