incontrovertible

incontrovertible /ɪnˌkɑːntrəˈvɚtəbəl/ adjective
incontrovertible
/ɪnˌkɑːntrəˈvɚtəbəl/
adjective
Britannica Dictionary definition of INCONTROVERTIBLE
formal
: not able to be doubted or questioned : indisputable

— incontrovertibly

/ɪnˌkɑːntrəˈvɚtəbli/ adverb