Butkutė is a Lithuanian surname that functions as a feminization of the masculine surname Butkus. In Lithuanian naming traditions, many masculine surnames have corresponding feminine forms that indicate both gender and marital status. The suffix -utė is specifically used for unmarried women, whereas married or widowed women often take the suffix -ienė (as in Butkienė) or -uvienė (as in Butkuvienė).The root name Butkus is thought to derive from a given name ultimately based on the Lithuanian verb būti, meaning "to be" or "to exist." Given names formed from this verb may have originally been auspicious names, perhaps expressing a wish for the child's existence and well-being. Over time, such given names became hereditary surnames, with Butkus acquiring the grammatical characteristics typical of Lithuanian masculine surnames (often ending in -us).Lithuanian surnames are known for their elaborate system of feminization and declension. A surname like Butkutė was historically assigned to an unmarried daughter of a man named Butkus, and it often remained the woman's legal surname for life if she never married. In modern Lithuania, while the tradition persists, women may choose to keep the -utė form even after marriage, though the traditional names for married women remain common. The variant Butkienė is the feminization typical for married women (dropping the masculine -us and adding -ienė), while Butkuvienė follows a different but similar pattern, possibly derived from a different declensional stem.The distribution of Butkutė, as recorded by Forebears.io in 2014, shows the name almost exclusively found in Lithuania, with a small presence in Belarus, further confirming its local origin and restricted usage due to its grammatical specificity.