I really like the girl name [name_f]Cleo[/name_f], but it doesn’t sound like a complete or full name to me. I dislike the name [name_f]Cleopatra[/name_f], and can’t think of any other names for which [name_f]Cleo[/name_f] could be a nickname. Any ideas? Thnx 
My first thoughts were Cleophée ([name_f]Cleo[/name_f]-fay) and [name_f]Calliope[/name_f]. Other suggestions:
Cleodora
[name_f]Cliona[/name_f]
[name_f]Cleone[/name_f] (Clee-oh-nee)
Cleome
Cliora
I love [name_f]Cleo[/name_f]/[name_f]Clio[/name_f]!
Maybe [name_f]Clementine[/name_f]?
I think [name_f]Cleo[/name_f] could work as a nickname for most Cl- starting girls names. My favourite is [name_f]Clementine[/name_f].
Not including the names already listed above, perhaps these names could work:
[name_f]Clarion[/name_f]
[name_f]Claudelle[/name_f] (KLO-dell)
[name_f]Clemence[/name_f]/[name_f]Clemency[/name_f]
[name_f]Cleona[/name_f]/[name_f]Cleora[/name_f]
[name_f]Cleantha[/name_f]/[name_u]Cleanthe[/name_u]
[name_f]Clodagh[/name_f] (KLO-dah)
[name_f]Clothilde[/name_f] (klo-TEELD)
[name_f]Clover[/name_f]
I love [name_f]Cleo[/name_f] as it is; however, most will automatically think it is a nn for [name_f]Cleopatra[/name_f].