peppery

adjective2

1. •
   Resembling or characteristic of pepper, especially in having a spicy taste.
2. •
   (figurative) Having a fiery temperament.

   • For I'm a peppery potentate, / Who's little inclined his claim to bate, / To fit the wit of a bit of a chit, / And that's the long and short of it! — 1884