confirming
v.v. stating that something is definitely true or that a plan is now certain. You use this when you want to remove any doubt about a fact or an arrangement.
v. establishing the truth, accuracy, or validity of something previously believed or suspected. Often used to finalize arrangements or verify data.
I am calling to confirm my doctor's appointment for tomorrow.
The laboratory results are confirming our initial theory that the water supply was contaminated by the nearby factory.
By confirming the receipt of the legal documents, the clerk initiated the formal countdown for the defense to file their response to the allegations.
The verb is transitive and requires a direct object, such as a noun or a 'that' clause.
I am confirming about the meetingI am confirming the meetingConfirm is a transitive verb and does not take the preposition 'about'.