feisty

the word 'feisty' has a colorful and somewhat humorous origin in american english. it derives from the term 'feist', a regional name for a small, noisy, and aggressive dog, particularly a mongrel terrier. this canine term is thought to originate from the earlier verb 'fist', meaning to break wind, based on the old belief that such small dogs were prone to flatulence. by the late 19th century, the adjective 'feisty' was formed by adding the '-y' suffix, transferring the qualities of the spirited, irritable dog—liveliness, tenacity, and a readiness to fight—onto people, initially with a slightly derogatory connotation that has softened over time to denote spirited courage.

the word is a simplex form. it is derived from the english dialectal term 'feist' or 'fice', meaning a small dog, which itself likely comes from the obsolete verb 'fist', meaning to break wind. the '-y' suffix is a common english adjectival suffix.