Piper's rising popularity for girls makes it an unlikely masculine choice.

Could be a novel way for a boy's name to honor an ancestral Claire.

Lou, all by itself, is become fashionable for girls, which usually makes a name LESS fashionable for boys. But Lou, like Bill or Jim, is rarely used on its own for boys anyway. (You wouldn't name a boy Frederick Lou the way that girls are named Mary Lou or, in the case of Keri Russell's new baby, Willa Lou.) Long form Louis is getting cool again and, with the Lewis spelling, is the Number 2 name in Scotland.

Long gone to the girls.

Forget the oil. It's one of the twins that make up the constellation Gemini, and a mythological name on the cutting-edge of fashion; used by Metallica's James Hetfield.

Seren, meaning "star", is one of the top girls' names in Wales, but as a boys' name it has a different derivation. It's a rare Polish form of the Latin Serenus, mostly used to refer to the Saint and meaning "serene". It could make for a handsome and almost unknown alternative to rising star Soren.

Among the coolest of the cool color names, particularly popular with celebs as a unisex middle name. While most famous as the name of Beyonce and Jay-Z's daughter Blue Ivy, more than 60 percent of the babies named Blue are boys.

Luka is one of the coolest names in recent years, following suit of its cousin Luca which is now a Top 50 name. Luka is on its way up the charts and may crack the Top 100 in the very near future. Luka has a lot going for it — it is following the tails of Lucas and Luke which have been enjoying significant popularity for years. It also boasts the very current "-ah" ending sound that feels fresher than ever for boy names, from Noah to Ezra to Judah. The "k" in the middle gives an extra edge as well. This spelling is the traditional form of Luke in various Eastern European countries.

Cael is the name of the angel of the zodiac sign of Cancer and also of a warrior of Irish mythology. Its ascendance to the Top 1000 over the past decade probably has to do with its similarity to Cale and Kale (and Kyle and Cayden etcetera).

An early and still one of the most popular unisex names, also a place name and name of a Native American people in the northern Mississippi valley, which makes it a controversial baby name choice. While the popularity of Dakota is trending downward for both genders, it's one of those rare genuinely gender-neutral names that is used for nearly equal numbers of boys and girls.

Justice, one of the rare virtue names for boys, entered the popularity ranks in 1992, and remained in the charts until the 2020s. While it has fallen out of favor in more recent years, it remains a fresh but solid feeling option.

Winston meets Marlow in this surname-style choice, blending old-fashioned charm and a hint of stuffiness with a bit of modern edge and breeziness too. Borne by the distinguished American landscape painter Winslow Homer, it could make a creative and unexpected choice, though some may be put off by the 'slow' ending.

A lean and lanky Irish cowboy name with great nickname potential to boot (Cass or Sid are both options). This is one of the great under-rated American names!

This attractive surname name still projects that Kennedy family charisma. While it didn't come into widespread use until long after the deaths of martyred heroes President John F. or Senator Robert Kennedy, Kennedy is now one of the most popular unisex names, particularly for girls. This is one name that manages to sound trendy and traditional at the same time.

Despite its origin as a patronymic meaning "son of Adam", Addison really caught on for baby girls in the US around the turn of the millennium, following in Madison's footsteps to peak at #11 in 2007 and again in 2010.

Meredith has been considered primarily a girl's name since the fifties, before which it was more commonly used for boys. Comic actor Jay Mohr recently named his son Meredith, which might help it swing back into the blue column. The traditional Welsh pronunciation puts the stress on the middle syllable, making Red a cool nickname possibility.

Akira is a popular Japanese name for both sexes that's migrated to the West because of its appearance in manga and video games. Akiro is a related name popular for boys.

Another astral name, this one relating to one of the largest and brightest stars in the heavens, is popular in Scandinavia and Spain, where it ranks among the Top 50 girls' names. Although still very rare in the US, we think it has serious potential to follow the likes of Luna and Lyra up the charts.

The musical word name Cadence, seemed to come out of nowhere to zoom up the charts; it rose over 700 spots between 2002 and 2004, and showed up in the Top 200 in 2007. It's gone down in the popular names list since then, though. Some might see it as a feminine relative of the popular Caden. Kadence and Kaydence are also rising.

This is a great American name that deserves more attention from parents looking for a name that balances a soft sound with a more traditionally masculine cowboy image.