surely
//ˈʃʊrli//
Adverb
1
Used to express certainty or confidence about something.
This will surely be a success.
2
Used to emphasize that something is true or will happen without doubt.
This will surely be the best decision you ever make.
3
Used to express agreement or affirmation, often in response to a question or statement.
"Can you help me with this?" "Surely."
4
Used ironically to express doubt or surprise about something that seems unlikely or contradictory.
Surely you don't believe that story?