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English definition of “regret”

regret

verb    /rɪˈɡret/ (-tt-)
to feel sorry or unhappy about something you did or were unable to do: [T] He regretted his decision to leave school. [+ (that) clause] I regret (that) I didn’t buy more when they were on sale. [T] I’m going to regret eating all those nachos. fml Regret is also used to express in a polite way that you feel sorry about something: [+ (that) clause] My husband regrets (that) he couldn’t be here tonight. [+ to infinitive] The weather, I regret to say, is getting worse.
(Definition of regret verb from the Cambridge Academic Content Dictionary © Cambridge University Press)
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