The word "动辄" is formed by combining the character "动", meaning "to move" or "to act", with "辄", which originally denoted a chariot part but evolved into an adverb meaning "then" or "always". In this compound, "动" provides the sense of action, while "辄" contributes the notion of regularity or immediacy, together creating an adverb that means "at every turn" or "easily", used to indicate that an action occurs frequently or with little cause.