give/send your regretsformalREJECT/NOT ACCEPT to say that you are unable to go to a meeting, accept an invitation etc 〔因不能赴会、接受邀请等〕表示歉意 My father was ill and had to send his regrets. 我父亲因病不能前往,只好表示歉意。
give/send your regrets• Henry sends his regrets - he has the flu.
→ give/send your regrets at regret2(1)