The crossword solution for the term 'TO'S COUNTERPART' is FRO. This is an abbreviation of the word 'FROM, ' which is a preposition that indicates the source or origin of something. It is often used in conjunction with the word 'TO, ' which indicates the destination or recipient of something. Together, these two words form the phrase 'TO and FROM, ' which is commonly used TO describe the movement of people or objects between two locations.