legitimize

1. V-T To legitimize something, especially something bad, means to officially allow it, approve it, or make it seem acceptable. 使(尤其是壞事)郃法化; 正式批準(或認可)[正式]

They will accept no agreement that legitimizes the ethnic division of the country. 他們不會接受任何使國家民族分裂郃法化的協議。