I dare say
US /aɪ der saɪ/
UK /aɪ der saɪ/

1.
used to express a speaker's hesitant agreement or reluctant admission
:
•
“Is it true you’re leaving?” “I dare say it is.”
•
It's a difficult task, I dare say.
2.
used to express a speaker's strong belief or opinion
:
•
He's the best player on the team, I dare say.
•
That was a foolish decision, I dare say.