The crossword solution for the term 'PARTNER FOR THIS AND THAT, WITH 'THE'' is OTHER, which is a five-letter word. OTHER is a pronoun that is used to refer to a person or thing that is different from the one already mentioned or known about. It can also be used to refer to a person or thing that is not specified or mentioned. In this context, it is referring to a partner for the previously mentioned activity, with the definite article 'the' included.