Noun

A feeling of regret or sadness for doing wrong or sinning.

* {{quote-news

, year=2011 , date=December 14 , author=Steven Morris , title=Devon woman jailed for 168 days for killing kitten in microwave , work=Guardian citation , page= , passage=Jailing her on Wednesday, magistrate Liz Clyne told Robins: "You have shown little remorse either for the death of the kitten or the trauma to your former friend Sarah Knutton." She was also banned from keeping animals for 10 years.}}

* 1897 , ,"

Failure, disgrace, poverty, sorrow, despair, suffering, tears even, the broken words that come from lips in pain, remorse that makes one walk on thorns, conscience that condemns . . . —all these were things of which I was afraid.

(obsolete) Sorrow; pity; compassion.

* 1597 , , King John , act 4, sc. 3,

This is the bloodiest shame,

The wildest savagery, the vilest stroke,

That ever wall-eyed wrath or staring rage

Presented to the tears of soft remorse .

Noun

(en noun)

An action of regressing, a return to a previous state.

* 1899: Thorstein Veblen, The Theory of the Leisure Class

Few of these groups or communities that are classed as "savage" show no traces of regression from a more advanced cultural stage.

(psychotherapy) A psychotherapeutic method whereby healing is facilitated by inducing the patient to act out behaviour typical of an earlier developmental stage.

(statistics) An analytic method to measure the association of one or more independent variables with a dependent variable.

(statistics) An equation using specified and associated data for two or more variables such that one variable can be estimated from the remaining variable(s).

(programming) The reappearance of a bug in a piece of software that had previously been fixed.