to be sorry about: I regret my foolish behaviour/behavior; I regret that I missed the concert; I regret missing the concert; I regret to inform you that your application for the job was unsuccessful.
az: peşman olmaq
ru: сожалеть
♦ noun
a feeling of sorrow, or of having done something wrong: I have no regrets/I feel no regret about what I did; It was with deep regret that I heard the news of his death.
az: peşmanlıq
ru: сожаление