See peppery in Webster's New World Roget's A-Z Thesaurus II
adjective
Easily annoyed:
choleric, irascible, quick-tempered, testy, tetchy, touchy. See feelingsFull of or characterized by a lively, emphatic, eager quality:
fiery, high-spirited, mettlesome, spirited, vibrant. (Informal) snappy. See action, feelings
Learn more about peppery