Answer:

fiercer

AnswerCrossword Clue
FIERCERMore ferocious
FIERCERMore intense
FIERCERMore hard-fought
FIERCERMore violent.
FIERCERMore truculent.
FIERCERLike a bobcat vis- -vis a pussycat
FIERCERMore apt to bite
FIERCERLike a bobcat vis-a-vis a pussycat