One of the coolest of names, thanks to legendary jazz pianist Thelonious Sphere Monk, who inherited this Latin-sounding German name from his father. It has been used very sparingly since the 1960's, with just a sprinkling of baby boys receiving the name each year, though it's one of the unique baby names we predict will get much less unique as more parents embrace its quirky charms.

Kai is an internationally flexible name with many possible origins and meanings, growing in popularity in the US and a diverse range of European countries.

Though closely associated with the great medieval Florentine poet Dante Alighieri -- who's so famous most people skip the last name -- it's not as much of a one-man name as you might think. Heck, it's not even a one-poet name, thanks to British pre-Rapahaelite Dante Gabriel Rosetti. Though especially well used in the Italian-American community, it would make a striking name for any little boy.

Killian – aka Cillian – is a spirited yet resonant Gaelic name that was borne by several Irish saints and could make a distinctive replacement for the dated Kelly. Kylian is another spelling that's gaining traction, thanks to French soccer star Kylian Mbappé. Possible downsides: an unsavory first syllable and a connection to the trendy brew.

Orion is a rising star, with both mythical and celestial overtones.

Malcolm is a warm and welcoming Scottish appellation (originally Mael-Colium) that fits into that golden circle of names that are distinctive but not at all odd. A royal name in Scotland, Malcolm is also a hero name for many via radical civil rights activist Malcolm X.

Roman is an ancient name trending in a major way. A surprise hit name of recent years, Roman now ranks in the Top 100 not only in the US but throughout the English-speaking world, and is rising in other European countries as well.

Phineas is the English variation of Phinehas, a Hebrew name likely derived from the Egyptian name Pa-nehasi. Pa-nehasi, meaning "the Nubian" can also be translated as "the bronze-colored one." The Egyptians distinguished themselves from their Nubian neighbors through differences in skin tone.

Monty, a name with a World War II feel, is rarely used on its own in the US. But we're hearing rumblings of a comeback and think that Monty, whatever it's short for, is an adorable vintage nickname name of the future. It's already a hit in the UK.

Both offbeat and upbeat, this evocative traditional Irish name that runs through Celtic mythology is known here via award-winning novelist Cormac McCarthy (born Charles). The author's adopted name is related to Cormac Mac Airt, one of the great legendary high kings of Ireland.

A name that crosses cultures, Idris was virtually unknown in the US before the emergence of the charismatic actor Idris Elba, first on The Wire and then for depicting Nelson Mandela. Since then, the name has grown with the actor and is a popular choice in the UK and Belgium, and a familiar one in The Netherlands, France, and the US.

X marks the spot in names these days, usually at the middles or ends of names, but here is one that puts it squarely up front.

Baseball commissioner Bowie Kuhn put this name in play as a first name, but David Bowie (born with the considerably less marketable moniker of David Robert Jones) gave it charisma. He changed his surname in 1965 to avoid confusion with the then popular Davy Jones of The Monkees, borrowing it from the American hero of Alamo, Jim Bowie.

Though the fuller Lancelot has for the most part been shunned as a 'too-much-name' name, the short form Lance has been consistently in or around the Top 500 since 1938, climbing as high as Number 76 in 1970. It was used as a character name by Walter Scott as far back as 1823. Lance is also the name of a medieval weapon, making this name all boy.

Thaddeus, a distinguished, long-neglected name, has several areas of appeal: a solid New Testament legacy, a nice antique feel, and the choice of several more modern nicknames and international variations.

This name of the Cretan goddess of fertility is most popular now as the more melodic Ariana, but Ariadne has possibilities of its own. It first entered the US Top 1000 in 2014. The renewed interest in the name falls in line with the revival of other mythological names like Apollo and Athena. The trendy nickname Ari doesn't hurt either.

The name of the guardian angel in It's a Wonderful Life is rarely heard the rest of the year because of its studious, near-nerdy image, but this could change in the current naming climate.

One of several Anglicized forms of Caolán, this spelling is borrowed from the Old Irish root, cáel.

It’s been more than three decades since Ferris Bueller took his famous day off in the cult classic 1986 teen comedy movie, but we think the time for this name could and should be now! Especially with the recent rise of the hero's girlfriend, Sloane, up the baby name rankings. Half preppy, half rugged, it boasts that stylish S ending and has a cozy, retro feel.

The name of a figure from Greek mythology, Adonis is a high-pressure name often synonymous with masculine beauty. Nonetheless, many mythological names that would have previously been deemed off limits have made their way up the popularity charts—for instance, Penelope currently ranks highly for girls. And indeed, Adonis was one of the fastest-rising boys' names of 2016, moving up 307 spots on the U.S. popularity chart in just one year.