From Longman Dictionary of Contemporary EnglishI might say/addI might say/addspoken used to emphasize what you are saying I was, I might say, not surprised. → might
Examples from the Corpus
I might say/add• Hair: grey and losing it, I might add.• None of which has been answered yet, I might add.• Very expensive method too I might add.• Yes, they have decided to reinstate you, over my violent objections, I might add.• Likewise. I might add a little oregano, garlic, onions, salt, and butter once in a while.• In passing, I might say how extraordinarily lucky I am to have them here with me.• And battling it gracefully, I might add, wielding his mighty pen like a sword. 