beg (someone's) pardon

Translations
просить прощения
I beg your pardon, I didn't mean to interrupt.
Прошу прощения, я не хотел перебивать.
Definitions
To ask someone to excuse or forgive a mistake or offense, often used as a polite way to request clarification or to express regret.
Words
pardon

noun
помилование
beg

verb
умолять