Regret

Vine's Expository Dictionary of NT Words

A — 1: Μεταμέλομαι (Strong'S #3338 — Verb — metamelomai — met-am-el'-lom-ahee )

"to regret, to repent one," is translated "to regret" in  2—Corinthians 7:8 , RV (twice), AV, "repent." See Repent.

B — 1: Ἀμεταμέλητος (Strong'S #278 — Adjective — ametameletos — am-et-am-el'-ay-tos )

"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.

Webster's Dictionary

(1): ( v.) Pain of mind on account of something done or experienced in the past, with a wish that it had been different; a looking back with dissatisfaction or with longing; grief; sorrow; especially, a mourning on account of the loss of some joy, advantage, or satisfaction.

(2): ( v.) Dislike; aversion.

(3): ( v. t.) To experience regret on account of; to lose or miss with a sense of regret; to feel sorrow or dissatisfaction on account of (the happening or the loss of something); as, to regret an error; to regret lost opportunities or friends.