definitely [ˈdefɪnətli]

以下由轻松背单词网站提供

adv.一定地，肯定地；明确地，确切地

without any doubt

The team will definitely lose if he doesn't play. 如果他不参加比赛，这个队肯定会输。
I shall definitely be home before six o'clock. 6点以前，我一定回家。