|Origin:||, past participle of legitimare 'to legitimize', from Latin legitimus 'legitimate', from lex 'law'|
fair or reasonable:
That's a perfectly legitimate question.
Most scientists believe it is legitimate to use animals in medical research.
acceptable or allowed by law:
Their business operations are perfectly legitimate.
a legitimate child is born to parents who are legally married to each other [≠ illegitimate]
a legitimately elected government
He complained quite legitimately about his treatment.
—legitimacy noun [uncountable]
Opponents have questioned the legitimacy of the ruling.