Synonym: be sorry for, bemoan, bewail, rue. Antonym: content. Similar words: regressive, gregarious, the greenhouse effect, degrade, integrate, integrated, integration, degradation. Meaning: [rɪ'gret] 
n. sadness associated with some wrong done or some disappointment. v. 1. feel remorse for; feel sorry for; be contrite about 2. feel sad about the loss or absence of 3. decline formally or politely 4. be sorry.
n. sadness associated with some wrong done or some disappointment. v. 1. feel remorse for; feel sorry for; be contrite about 2. feel sad about the loss or absence of 3. decline formally or politely 4. be sorry. 
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151. We regret that latecomers cannot be admitted until a suitable break in the performance.
152. We express our deep regret at untimely death of your husband.
153. Is there anything you've done in your life that you regret? Sentencedict.com
154. We apologize for the delay and regret any inconvenience it may have caused.
155. The ending of the war is not a cause for celebration, but rather for regret that it ever happened.
156. He was beginning to regret his break with the Labour Party.
157. I wish I could put the clock back and relive my schooldays; I regret not having tried harder and passed more exams.
158. His one regret is that he has never learned a language.
159. He expressed great regret and said that surgeons would attempt to reverse the operation.
160. I regret to advise you that the course is now full.
161. I regret to say that these rumours are only too true.
162. I don't regret stepping out of the security of marriage.
163. We regret to inform you that you are being furloughed indefinitely.
164. This shop is closed today for staff training. We regret any inconvenience caused.
165. If you just give me a break, you won't regret it.
166. I regret that I am unable to accept your kind invitation.
167. One day, perhaps far in/into the future, you'll regret what you've done.
168. He gave up teaching in 1997, much to the regret of his students.
169. Gail searched his face for the slightest hint of regret.
170. If you don't take my advice, you'll regret it, I promise you.
171. If we don't act now, we'll live to regret it .
172. The manager expressed deep regret at/for the number of staff reductions.
173. He did not regret saying what he did but felt that he could have expressed it differently.
174. "I very much regret the injuries he sustained," he said.
175. We regret to announce the death of our chairman, Alfred Sidebottom.
176. He gave her a wry look, something between amusement and regret.
177. I regret to tell you that Mr White has departed from the world for ever.
178. She knew that she would live to regret this decision.
179. They're going to regret firing me, you mark my words.
180. They began to regret the purchase of such a large house.
More similar words: regressive, gregarious, the greenhouse effect, degrade, integrate, integrated, integration, degradation, middle ground, on the grounds of, greet, Greek, green, great, agree, forego, agree on, agree to, greatly, digress, fret, regain, region, regime, regard, disagree, Congress, regular, agreement, agreeable.