Piercer.
Fiercer isn't actually a word.
It is difficult to say which animal is fiercer.
He was afraid of the dog because it was a lot fiercer than his own one.
Fierce means marked by an extreme and violent energy. The superlative forms of fierce are fierce, fiercer, and fiercest.
more furious = comparative most furious = superlative
The correct form is "She is fiercer than you are." In English, the comparative form of the adjective "fierce" is "fiercer," which is used for one-syllable adjectives. While "more fierce" can be understood, it is less commonly used and generally considered less standard.
No. A wolverine is much fiercer than a deer because a wolverine is the biggest and fiercest mammal ever.
fiercest, fiercer
The comparative degree of the adjective "fierce" is "fiercer." It is used to compare the intensity of fierceness between two subjects. For example, you might say, "The lion is fiercer than the tiger."
Fiercer storms.
comparative=fiercer superlative=fiercest
The Asian Hornet is a much bigger insect.