make an apology
The president made an apology to the people of Japan in a public speech.
Go to the thesaurus article about these synonyms and antonyms of express regret.  
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If you apologize for something, you say sorry that you did it.

express regret | American Thesaurus

express regret

verb
These are words and phrases related to express regret. Click on any word or phrase to go to its thesaurus page.

APOLOGIZE

Synonyms