Sibling names for Eithan
Names that sound like they belong in the same family as Eithan usually share its era. These sister and brother names rose and fell on a similar curve to Eithan, whose busiest decade was the 2020s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Eithan
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Ailany | #14 | 10,441 | 2020s | |
| Scottie | pet form of Scott ('a Scot') | #126 | 4,743 | 2020s |
| Analeia | #514 | 1,102 | 2020s | |
| Kyomi | #548 | 1,151 | 2020s | |
| Adhara | virgins (Arabic star name) | #370 | 2,041 | 2020s |
| Icelynn | #1,110 | 812 | 2020s | |
| Wrenley | #159 | 7,256 | 2020s | |
| Lainey | pet form of Elaine | #30 | 17,762 | 2020s |
| Madisson | son of Matthew (or of Maud) | #319 | 1,489 | 2020s |
| Kaylani | sea and sky (variant of Kailani) | #185 | 6,578 | 2020s |
| Romy | #698 | 1,193 | 2020s |
Brother names for Eithan
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Colson | son of Coll (Nicholas) | #311 | 5,082 | 2020s |
| Kyaire | #367 | 1,892 | 2020s | |
| Chosen | chosen (English word) | #555 | 1,814 | 2020s |
| Jasai | #439 | 1,153 | 2020s | |
| Kaizen | improvement (Japanese word) | #364 | 2,405 | 2020s |
| Colter | #157 | 6,196 | 2020s | |
| Izael | #767 | 1,175 | 2020s | |
| Jettson | #824 | 1,077 | 2020s | |
| Kayce | #375 | 2,954 | 2020s |
Eithan's era
Eithan ranked #97 for boys in 2025, against #1,603 in 2015. Its best year was 2025, at #97. A sibling name from the same wave will sound like it was chosen by the same parents; a name from an older or newer wave can make one child's name feel dated next to the other's.
Timeless names that go with any sibling
These names have been used steadily for a hundred years, so they sit comfortably next to a name from any era, Eithan included.
Girls: Maria, Lydia, Cecilia, Julia, Miriam, Nina. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Eithan
These names follow Eithan's curve too, but we left them out above because they share a first letter or an ending with Eithan. Some parents like that echo; if you do, start here.
How these were chosen
Each suggestion's share of US babies has followed a curve close to Eithan's since 1880, and its recent number of babies is within about twelve times Eithan's, so the names are in the same league. Names starting with the same letter as Eithan or with the same ending are left out, so the names go together without matching. Spellings of Eithan itself are excluded.