/ ˌʌnɪmˈpiːtʃəbl; NAmE / adjective
( formal , approving ) that you cannot doubt or question :
evidence from an unimpeachable source
/ ˌʌnɪmˈpiːtʃəbl; NAmE / adjective
( formal , approving ) that you cannot doubt or question :
evidence from an unimpeachable source
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005