legitimate
adjective
uk/lɪˈdʒɪtəmət/ us LAW
allowed by law or done according to the rules of an organization or activity:
Defense lawyers argued that such payments are legitimate and customary in newspaper deals.
a legitimate business/company/trader
legitimate expenses/fees
fair and honest:
Concerns relating to employee fraud and other forms of malpractice were acknowledged as being legitimate.
legitimate complaints/questions/reasons
legitimately
adverb
Manufacturers legitimately argued that the ingredients of their products are subject to commercial confidentiality.