obstreperous

The word "obstreperous" comes from the Latin word "obstreperus," which means "noisy" or "clamorous." This Latin term is derived from "ob-" meaning "against" and "strepere," which means "to make a noise." The word entered English in the mid-17th century and has retained the sense of being noisy or unruly, often in a way that is difficult to control. The suffix "-ous" is added to form an adjective, indicating that something possesses the quality of being noisy or turbulent. Thus, "obstreperous" describes someone or something that is aggressively noisy or uncontrollable.