There are several synonyms for the term "female spouse," which can be used to refer to a woman who is legally married to another person. These synonyms include "wife," "partner," "better half," "significant other," "life partner," and "soulmate." Each of these terms conveys a slightly different connotation, with "wife" being the most traditional and "soulmate" suggesting a deep emotional connection. "Partner" and "significant other" are often used in more casual or contemporary contexts, while "better half" is a term of endearment that is often used affectionately. Overall, each of these synonyms can be used to refer to a woman in a committed relationship.