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The great philosopher's name is commonly used in Greek families, and is one that could work for daring, philosophy inclined American ones.

Asha is an Indian name that comes from the Sanskrit word for hope or desire, but it is also a Swahili name derived from Aisha, meaning life. Since the ascendance of Ashley through the 1980s and 90s, all baby names Ash-related have been used in the U.S. for both girls and boys, from Ashlyn to Ashby, Ashton to Asher. Despite its separate roots, Asha is part of this group.

Authentic African name that blipped in popularity a few years ago when hip-hop singer Ashanti first arrived on the scene.

Aslan, derived from the Old Turkic word arslan, meaning "lion," is best known in the West as the name of the heroic lion in C.S. Lewis' "Chronicles of Narnia" series, who serves as an allegorical stand-in for Jesus Christ. It was also used as a positive epithet for several Turkish emperors in the Middle Ages.

Atticus, with its trendy Roman feel combined with the upstanding, noble image of Atticus Finch in To Kill a Mockingbird, is a real winner among boy names. Atticus entered the US Top 1000 in 2004 and is a firm Nameberry favorite.

Used primarily in Scotland, and represented here by singer Audra McDonald, the girls' name Audra has been overshadowed by the return of the classic Audrey. Audra may be to Audrey what Jenna is to Jennifer and Jessa is to Jessica: A variation that will rise as the original falls from favor, which may take another decade.

Aura is a New Age-y word turned name turned contemporary slang for karm. In Greek and Roman mythology, Aura was the Titan of the breeze and the fresh, cool air of early morning. But at odds with her peaceful, well, aura, the mythological Aura is a tragic figure, ultimately transformed into a fountain by Zeus.

Aurelia is an ancient Roman name that's become a surprise hit in the contemporary world. A top favorite on Nameberry, it reentered the US Top 1000 in 2014 after a 70-year absence and continues to climb.

Since Aurelius was given the supermodel seal of approval by Elle Macpherson, it has joined Augustus as an ancient Roman name that feels usable today. Slightly mystical and magical, Aurelius is grounded by its similarity to rising stars Aurora, Aurelia, and Atticus, and its golden aura is certainly appealing. 

Avalon, an island paradise of Celtic myth and Arthurian legend--it was where King Arthur was taken to recover from his wounds-- and also the colorful capital of the California island of Catalina-- makes a heavenly first name. Actress Rena Sofer and British musician Julian Cope used it for their daughters.

Avery is a unisex name that is used four times as often today for girls as for boys. But while Avery's popularity is starting to soften for girls, it continues to get stronger for boys -- in keeping with our finding that gender neutral names are becoming more favored for boys than for girls.

Azalea is one of the fresher flower names, along with Zinnia and Lilac, that are new to the name bouquet — in fact, it entered the Social Security list for the first time in 2012. So if Lily and Rose are too tame for you, consider this brilliant pink springtime blossom with a touch of the unusual that has been growing in popularity.