"to regret, to repent one," is translated "to regret" in 2 Corinthians 7:8 , RV (twice), AV, "repent." See REPENT.
"not repented of" (a, negative, and A), is translated "which bringeth no regret" in 2 Corinthians 7:10 , RV, said of repentance (AV, "not to be repented of"); elsewhere, in Romans 11:29 . See REPENT.