YOU SAID:
I regret this immensely
INTO JAPANESE
私はこれを非常に後悔しています
BACK INTO ENGLISH
I regret this very much
INTO JAPANESE
とても後悔しています
BACK INTO ENGLISH
I regret it very much
INTO JAPANESE
とても後悔しています
BACK INTO ENGLISH
I regret it very much
That's deep, man.