Despite its varied cultural ties, Zizi still sounds like a cancan dancer or a fluffy lapdog.

Old-fashioned nickname for a sister, almost never heard today.

Zamzam has to be the ultimate impact name. Despite all those Zs, Zamzam, is not a trendy modern invention by some rock star; in fact Zamzam derives from the Well of Zamzam, which is the holiest place in Mecca.

Lili has been blooming in many forms for a couple of decades now. The Lili version will surely get more attention now that the Duke and Duchess of Susses, aka Harry and Meghan, are using is as a short form for their daughter Lilibet Diana's name. Lili makes the slight and light though that is not necessarily a bad thing; it also mutes the name's floral identity and gives it a cute and quirky repetitive spelling, ala Coco and Lulu. A famous German song is titled Lili Marlene.

Fifi is a perfect name -- for a French poodle. But Fifi may seem more child-friendly as names like Coco and Lulu rise. Fifi in its fluffiness also balances the seriousness of such full names as Josephine or Federica.

Dodo is one of the few names of the cute repeating-sounds genre that is not alas so cute, being a slang word for someone brainless as well as the name of the infamous extinct bird. Dot, Dottie, Dory, or Thea are all preferable.

A Colonial-era nickname for Joan.

A peppy nickname name associated with Lolo (born Lori) Jones, American track and field champ.

In its mid-20th century heyday, Deedee — or Didi or Dede — was not infrequently used as a name in its own right. It's a cute, or maybe cutesy, short form of names like Deanne.

An informal nickname for names such as Julia, Juliette, and June.

Loulou is more likely to be fashioned as Lulu today, but as a short form for any of the Louise names, Loulou is the more logical if more cumbersome spelling. Adorable, in either version.

Actress Leelee Sobieski's real name is Liliane, after her French grandmother -- a better choice for any baby-namer.

If it's possible for a name to be too musical, this one is.

Not as lively or independent as Gigi, Kiki, or Coco.

Keke is a multicultural double-punch nickname, notably borne by actress Keke Palmer. Palmer was born Lauren Keyana, yet her nickname does not derive from her middle name — her older sister had an imaginary friend named Keke.

Some sources connect Tata to. variety of origins and meanings, most often "father", but as a name in English-speaking countries it might be a nickname for Tatiana or something similar.

Sprightly and engaging nickname for human, full name for pet. Author Jojo Moyes and dancer/singer Jojo Sliwa have propelled the name into the public eye.

A nickname for names such as Nina, Nicole, and any others containing the "ni" element. Olivia Rodrigo's character Nina "Nini" Salazar-Roberts in the High School Musical series has made it fresh for a new generation.

Of all the names with repeating sounds, Dede isn't the first we'd use (Lulu or Coco, maybe), but it certainly isn't the last — we much prefer it to Dodo or Fifi.

Repetitive Japanese name with a flittering meaning.