Begins or Ends with O

A high energy Italian word name.

Bardo has a poetic beginning and upbeat ending, with roots in several diverse cultures. It may be most familiar today via George Saunders' novel Lincoln in the Bardo, which refers to the Tibetan Buddhist state of suspension between one life and the next, resembling the Christian idea of Limbo. Bardo is also an ancient saint's name: Saint Bardo was the eleventh century bishop of Mainz, in Germany. Actress Sandra Bullock chose Bardo as her son's middle.

Short form of Adebayo

Beau suggests someone devilishly handsome, with a large measure of southern charm—a nice image to bestow on your boy. Often solely a nickname in the past, it's now standing firmly on its own. Beau has been on the Social Security list non-stop since 1969.

Softer than Benedict, less popular than Benjamin, and bolder than Bennett, Puerto Rican actor Benicio Del Toro introduced this name to the American mainstream in the early 2000s, before which the name was hardly use. Popular in Argentina, Benicio debuted on the US Top 1000 in 2016, when it was the third-fastest-rising boys' name, and while it hasn't skyrocketed then, it remains comfortably in the charts.

Benno is a cool name in its own right -- there was a tenth century Saint Benno -- though it is also used as a lively nickname for Benjamin. Saint Benno of Meissen is the patron saint of anglers and weavers and, strangely enough, alliteration.

A name best for pets.

One way to encourage some cheers for your little one, but not recommended.

Tough-yet-cuddly Bruno is an international name even in its origins: it derives from the Germanic word for “brown” plus a Latin ending, and was borrowed as a color word in many European languages.

Calixto is known in Spain as the name of three popes, one of whom was the martyr, Callixtus I, regarded as a saint. Calixto has a lot of energy and futuristic spirit, thanks in part to the attention-grabbing 'x.' He is the main character in the Spanish classic, Fernando de Rojas's Tragicomedy of Calixto and Melibea.

Energetic Italian classic that would blend with a surname of any ethnicity.

Gives Carlo a place-name/surname spin.

Cato conjures up images of ancient Roman statesmen and southern antebellum retainers; it could have revival potential, with its 'O' ending and the current interest in the names of Greek and Roman antiquity.

More unusual than Dakota or Austin, Colorado conjures images of majestic mountains and windswept wilderness. Some will prefer the more preppy Aspen, but Colorado feels like the true explorer.