The word 违背 is formed by combining two characters that each convey a sense of opposition or turning away. The first character, 违, carries the core meaning of "to disobey" or "to go against", suggesting a departure from a rule or a path. The second character, 背, originally meaning "the back", extends to concepts of "turning one's back on" or "betraying". Together, they merge into a single concept where the action of contravening (违) is intensified by the imagery of physically turning away or being disloyal (背), creating the comprehensive meaning of "to violate" or "to act contrary to" an agreement, principle, or expectation.