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Growing the family after Cosmo

Sibling names for Cosmo

Names that sit comfortably next to Cosmo on a holiday card — same style and era, deliberately different sound. We push different first letters and rhythms so the pair reads as siblings, not twins-by-typo.

Sister names for Cosmo

Astra♀

of the stars

Greek
Echo♀

reverberating sound; nymph

Greek
Phoebe♀

bright one; a moon epithet

Greek
Tsuki♀

moon

Japanese
Genesis♀

origin, beginning, coming into being

Greek
Zoe♀

life

Greek
Kiki♀

new beginning; double life

Greek
Zoey♀

life

Greek
Selene♀

moon goddess

Greek

Brother names for Cosmo

Orion♂

hunter constellation

Greek
Atlas♂

to endure

Greek
Zephyr♂

west wind

Greek
Haruto♂

sun flying, soaring light

Japanese
Elio♂

sun

Italian
Haruki♂

shining sun, springtime

Japanese
Bram♂

father of a multitude

Dutch
Anant♂

infinite, eternal

Sanskrit

Works either way

Aster✦

star

Greek
Eon✦

an age without end; eternal time

Greek
Hoku✦

star

Hawaiian
Sol✦

sun

Latin
Sora✦

sky

Japanese
Tala✦

star (Tagalog)

Filipino

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