1) it is a care to one afterwards
1a) it repents one, to repent one's self
Part of Speech: verb
Citing in TDNT: 4:626, 589
From G3326 and the middle of G3199; to care afterwards, that is, regret: - repent (self).
|a feel sad about||25.270|
|b change one’s mind||31.59|
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root μεταμέλομαι; click on the second column to search for that grammatical form of the root μεταμέλομαι; click on the third column to search for that word and grammatical form; click on the total to search for the root μεταμέλομαι.