The crossword solution for the term 'RELATED VIA ONE'S MOTHER' is ENATE, which is a five-letter word. Enate is an adjective that describes someone who is related to another person through their mother's side of the family. It is derived from the Latin word 'enatus, ' which means 'BORN.' This term is often used in genealogy to refer to someone who is related to another person through their maternal line.