Ferocity | adj. viciousness, violence |The lion is just one wild animal known for its ferocity.

Fiscal | adj. related to (government) money | Fiscal policy is how the government uses money to influence the economy.

Flourish | v. to prosper, grow, or make fast progress | After one year, the tiny plants had flourished into a breathtaking garden.

source: https://blog.prepscholar.com/sat-vocabulary-words