Backreference is a term commonly used in computer programming, particularly in regular expressions. A backreference is a sequence of characters that refers back to a previously captured group. This helps in identifying repeated patterns in the text. However, there are several alternative terms used for the word 'backreference'. One such term is 'backsubstitution', which refers to the act of replacing the captured group with the backreference. 'Group reference' is another possible synonym for backreference, since this term describes the process of referencing a previously captured group. The term 'capture group' is also commonly used, as it describes the group of characters that are captured and later referenced by the backreference.