daresay

verb2

1. •
   Chiefly in the form I daresay: to venture to say (as the speaker believes something is likely to be the case); to think something probable; to presume.

   • Are you going to stay up all night? I daresay that I am.
2. •
   (no longer used) Chiefly in the form I daresay: to say something boldly; to affirm or assert.

   • [H]e daresays he has had conversations with Goodfellow after the sale of the property, and Goodfellow seemed satisfied that the declarant was to get payment of his money. — 1834