de·mon·stra·ble 
/dɪˈmɑ:nstrəbəl/ adjective
/dɪˈmɑ:nstrəbəl/ adjective [more demonstrable; most demonstrable] formal : able to be proven or shown : possible to demonstrate
▪ There is no demonstrable evidence that the treatment is effective. ▪ a clearly demonstrable improvement
▪ There is no demonstrable evidence that the treatment is effective. ▪ a clearly demonstrable improvement
— de·mon·stra·bly /dɪˈmɑ:nstrəbli/ adverb
▪ The statements are demonstrably untrue/false.
/dɪˈmɑ:nstrəbli/ adverb ▪ The statements are demonstrably untrue/false.
