sassy

The word "sassy" is a distinctively American English formation from the mid-19th century. It derives from the noun "sass," a colloquial alteration of the word "sauce," which had long been used figuratively to mean "impertinent talk or behavior." The semantic link is clear: just as a strong sauce adds a bold, sharp flavor to food, "sass" adds a bold, sharp quality to speech. By adding the adjectival suffix "-y," meaning "characterized by," the word "sassy" was created to describe a person or manner full of such lively impudence or cheeky confidence, a meaning that has endured and expanded to include a sense of stylish boldness.

Structure: sass (impudence) + y (adjective-forming suffix) - sass: Origin: American English (19th century). Functional role: The core root meaning "impudence, insolence, backtalk." - y: Origin: Old English. Functional role: An adjective-forming suffix meaning "characterized by; full of."