Словарь синонимов английского языка - undoubtedly

(adv) indubitably, without (a) doubt, indisputably, unquestionably, beyond (a or the shadow of a) doubt, certainly, definitely, surely, assuredly, unmistakably or unmistakeably, explicitly, clearly, obviously, incontestably, irrefutably, incontrovertibly, undeniably: If they win, they will undoubtedly go to the pub to celebrate.