Sidonie is an appealing and chic French favorite that is starting to attract some American fans as a fresher alternative to Sydney. Also spelled Sidony, Sidonie was the birth name of the French novelist Colette.

Solstice graduated from word to official first name when author Lionel Shriver used it for a character in her novel Big Brother. But of course, there were people named Solstice before: 16 baby girls were given the name in the US in 2021 (and it is occasionally used for boys too).

Actress Sigourney -- born Susan -- Weaver made this unusual name (which she found in The Great Gatsby) famous, if not popular.

Severin is an ancient Roman family name borne by several early saints. It's still alive throughout Europe, and could be ready for import here. Severin Winter is a wrestling prodigy character in John Irving's The 158-Pound Marriage and, in its original Latin form, Severus Snape appears in Harry Potter.

Old saints' and popes' name that went to France in the 1920s with the Russian Ballets Russes; in its Russian form, Sergei, it retains an artistic, almost effete air.

Suzette has a kind of clunky retro charm – so kitsch it's almost cool again.

A fragrant herbal and color name that could make a sensitive, distinctive choice.

Seva is a feminine name with multicultural origins and rich spiritual significance. In Sanskrit, "seva" means "selfless service" or "devotion," representing acts of kindness without expectation of reward. The name also appears in Slavic languages, particularly Russian, where it functions as a diminutive of Vsevolod, meaning "ruler of all." Seva's simplicity gives it a modern, minimalist appeal despite its ancient roots. Though uncommon in Western countries, it has gained modest recognition among parents seeking names with spiritual meaning or cross-cultural significance. The name's brevity, easy pronunciation, and meaningful connotations make it accessible while remaining distinctive. Seva carries beautiful associations with compassion, generosity, and humanitarian values.

The sweet Czech form of Sylvia.

Sophisticated French choice. Or toxic petrochemical, as Ross on Friends famously joked when Rachel suggested it for their fictional daughter.

Soft, amber-hued herbal and autumnal name that's used most often to describe the color of a horse. The proper spelling: Sorrel.

Peppy cheerleader name of the 1960s and 70s that's sure to evoke the Four Seasons song of that name.

Sylvette is a delicate feminine name of French origin, functioning as a diminutive of Sylvie or Sylvia, which derive from Latin 'silva' meaning 'forest' or 'wood.' The suffix '-ette' adds a sense of daintiness and charm, typical of French naming patterns. The name gained some recognition through Pablo Picasso's series of artwork titled 'Sylvette,' inspired by a young woman he met in 1954. Though uncommon in English-speaking countries, Sylvette has maintained modest usage in French-speaking regions. The name evokes images of woodland grace and carries a sophisticated European flair while remaining approachable. Its connection to nature aligns with current naming trends favoring botanical and natural elements.

While Sidney in this spelling has a long history as a girls' name, it fell off the Top 1000 from the early 50s until 1990. Then it reemerged as one of the newly chic androgynous names for girls, rising into the Top 300 before falling off the Top 1000 list again in 2016. Sydney is now the more fashionable form.

Creative choice relating to the Lithuanian-born expressionist painter known for his bold, vibrantly colored canvases.

Sybille is a feminine name of Greek origin, representing a French and German variation of Sibyl. In ancient Greece, sibyls were women believed to possess prophetic powers and served as oracles. The name carries connotations of wisdom, foresight, and mysterious knowledge. This continental European spelling gives the name an elegant, sophisticated quality compared to the more anglicized Sibyl or Sybil. Popular in French-speaking regions and Germany, Sybille combines ancient mystique with refined European charm. The name experienced modest popularity throughout the 20th century but remains relatively uncommon in English-speaking countries, making it an intriguing choice for parents seeking a name with classical roots and international appeal.

Sabatay is a masculine name with Sephardic Jewish and Turkish origins. It's likely derived from 'Shabbetai' or 'Shabtai', a Hebrew name meaning 'born on the Sabbath' or 'rest'. The name gained historical significance through Sabbatai Zevi, a 17th-century Jewish mystic who claimed to be the Messiah. In Turkish culture, it appears as 'Sabetay' and is associated with the Sephardic Jewish community. Sabatay has remained relatively rare outside these cultural contexts, maintaining its distinctive character and cultural significance. The name carries spiritual connotations related to the Sabbath day of rest and reflection, while offering a unique sound that bridges Middle Eastern and Jewish naming traditions.

Sibylle is a feminine name with ancient roots, derived from the Greek 'Sibylla', referring to female prophets or oracles in ancient Greece and Rome. These sibyls were revered for their wisdom and prophetic abilities. The name has been used throughout European history, particularly in German, French, and Swiss regions. While never extremely common, Sibylle has maintained a steady presence, especially in continental Europe. It carries an air of mystique and classical elegance, often associated with wisdom and foresight. The name experienced modest popularity in the mid-20th century in French-speaking and Germanic countries. Variations include Sibyl, Sybil, and Sibilla.

African-American and women's rights activist Sojourner Truth was born as Isabelle into enslavement. She adopted her new name when she began traveling and preaching abolition in 1843. Sojourner is a heroine name that may, with the rise of spiritual word names such as Journey and Genesis, finally be ready for prime time.