2regret noun
plural regrets 1 : a feeling of sadness or disappointment about something that you did or did not do [count] ▪ She has no regrets about leaving him. ▪ My greatest regret is not going to college. [noncount] ▪ She expressed (her) regret for calling me a liar. ▪ To my regret, I never visited Europe. ▪ It is with deep regret that he is announcing his resignation. ▪ Much to the regret of my parents, I decided not to go to college. = Much to my parents' regret, I decided not to go to college. [=my parents were disappointed that I did not go to college] 2 regrets [plural] : a statement saying politely that you will not be able to go to a meeting, party, etc.
▪ My coworker gives/sends her regrets for not being able to attend the meeting.
▪ My coworker gives/sends her regrets for not being able to attend the meeting.
