The Chinese word "供认不讳" is formed by combining the characters "供" (meaning to confess) and "认" (meaning to admit) to create the compound "供认", which signifies confessing. This is then modified by "不讳", where "不" (not) negates "讳" (meaning to conceal or avoid), resulting in "without concealment". The entire phrase thus literally means "to confess without concealing", expressing the idea of making a full and frank admission.