broad-minded · adjective /ˈbrɔːd.mɑɪnd.ɪd/
broad-minded
C2 willing to accept other people's behavior and beliefs that are different from your own
Dictionary example:
My eighty-year-old aunt is very broad-minded.
Learner example:
It should also be pointed out that Alexander is a broad-minded and sociable person with outstanding organizational skills. (Certificate of Proficiency in English; C2; Russian)