rowdy

The origin of 'rowdy' is somewhat obscure but likely emerged in the early 19th century American English. It is thought to be a back-formation from 'row', a noun meaning 'a noisy disturbance or quarrel', which itself has a long history in English, possibly related to rouwen, an obsolete verb meaning 'to roar'. The '-dy' suffix is not a productive morpheme but rather part of the word's formation, giving it an adjective quality. Thus, 'rowdy' evolved from the core concept of a noisy uproar to describe a person or behavior characterized by such disruptive commotion.

The word 'rowdy' is a simplex word. It does not break down into smaller, meaningful morphemes within its modern English spelling. It functions as a single lexical unit.