in·de·fat·i·ga·ble 
/ˌɪndɪˈfætɪgəbəl/ adjective
/ˌɪndɪˈfætɪgəbəl/ adjective [more indefatigable; most indefatigable] formal : able to work or continue for a very long time without becoming tired : tireless
▪ an indefatigable campaigner ▪ a person of indefatigable patience/enthusiasm/optimism
▪ an indefatigable campaigner ▪ a person of indefatigable patience/enthusiasm/optimism
— in·de·fat·i·ga·bly /ˌɪndɪˈfætɪgəbli/ adverb
▪ She works indefatigably on behalf of her clients.
/ˌɪndɪˈfætɪgəbli/ adverb ▪ She works indefatigably on behalf of her clients.
