"Tooth for tooth" is a common phrase that refers to the concept of punishment that is equivalent to the harm done. It is often used in relation to law and justice. However, there are several other synonyms for this phrase, such as "an eye for an eye," "tit for tat," and "what goes around comes around." These phrases imply that any harm caused to someone will be returned to them in the same measure. They are considered a form of retribution or a way to maintain balance and fairness. These phrases are often used to describe situations where someone has been wronged or hurt and seeks justice or revenge.