If you will pardon the offense, I will promise not to be so remiss in the future.
Giusippe and I have been both rude and remiss, haven't we, Giusippe?
I was thunderstruck, and tried to think if I had been remiss in anything.
Be so merciful, that you be not too remiss; so execute justice, that you forget not mercy.
He had been remiss to the self-confessed daughter of his enemy.