surely
adv. sent.adv. used to show that you are almost certain something is true, or to express surprise that someone might disagree with you.
adv. used to express confidence in the truth of a statement or to indicate surprise that the listener might hold a contrary opinion.
Surely you aren't going out in this rain.
If they left two hours ago, surely they should have arrived at the station by now.
While the evidence is circumstantial, surely the jury will recognize that the defendant had no plausible motive for committing such a public crime.
From Middle English surely; equivalent to sure + -ly.
Sentence adverb — typically placed at the beginning of a clause or before the main verb to emphasize the speaker's belief.
He surely will win the race.He will surely win the race.When used for emphasis within a sentence, it usually follows the first auxiliary verb rather than preceding it.