1. Full of spirit or determination; plucky or spunky: "Feisty, smart, and courageous child protagonists ... populate [her] fictional world" (Carolyn L. Shute). See Note at andiron.

2. Quarrelsome or aggressive: "A bunch of guys got tipsy ... One of them got feisty and starting swinging punches at the others" (Didi Emmons).