mulier

Mulier, mulieris, f., third declension. Genitive plural mulierum, not mulierium, despite the look of the stem.

Latin has three words where English mostly has one. Femina is female as opposed to male, a biological label that applies to animals too. Mulier is a grown woman as opposed to a girl, and often carries the sense of a woman who has married. Uxor is specifically a wife, in the legal sense. Later Latin lets mulier drift towards "wife" often enough that the Romance languages took it that way: Spanish mujer, Italian moglie, Old French moillier. The adjective is muliebris, "womanly", which in Roman writers is rarely a compliment, and English keeps only muliebrity, a word nobody uses.