mentioning
v.v. to speak or write about something briefly. You use this when you want to bring up a topic without talking about it for a long time.
v. to refer to something briefly or incidentally. Transitive — requires a direct object, which can be a noun phrase, a gerund, or a 'that' clause.
She is mentioning the new project in the meeting.
While we were discussing the budget, he kept mentioning the need for better office equipment.
The report concludes by mentioning several minor discrepancies that, while not critical to the final result, warrant further investigation by the accounting department in the next fiscal quarter.
Transitive; often followed by a gerund or a 'that' clause.
He mentioned about the problem.He mentioned the problem.Mention is a transitive verb and does not take the preposition 'about'.