From Longman Dictionary of Contemporary EnglishI hasten to addI hasten to add formalEXPLAINused when you realize that what you have said may not have been understood correctly an exhausting course, which, I hasten to add, was also great fun → hasten
Examples from the Corpus
I hasten to add• Many of them built up vast fortunes under my father's regime, illegal fortunes, I hasten to add.• Metaphorically speaking, I hasten to add.• Not me, I hasten to add.• This wasn't me, I hasten to add, but the pill, which was based on belladonna.• I have, I hasten to add, no precise statistics on hand.• Not, I hasten to add, on account of my sweaty demeanour.• Not, I hasten to add, through fraud but through an error in part of the model. 