Of persons and their attributes or actions: Fierce, raging, furious; stern, wroth. Obsolete.

Extremely fierce or violent, ferocious; irascible, passionate.

Of a person, an animal, etc.: Full of fury or fierce passion; mad with anger, zeal, or the like; raging, frantic. Also of actions, attributes…

= rabid, adj.

Of persons, their actions, attributes, etc.: full of rage, passion, or anger; mad.

Furious, raging, mad.

Fierce, furious.

Of an animal: fierce, furious.

Spenserian word, with the sense ‘furious, savage’, due to misunderstanding of a passage containing yond, adj.1, probably the following:—

Furious, raging; wildly aggressive or violent. Also in extended use.