Sibling names for Adelaide
Names that sound like they belong in the same family as Adelaide usually share its era. These sister and brother names rose and fell on a similar curve to Adelaide, whose busiest decade was the 2010s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Adelaide
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Stella | star | #52 | 22,450 | 2010s |
| Sadie | pet form of Sarah | #50 | 18,029 | 2010s |
| Lucy | light (Latin root) | #25 | 25,390 | 2010s |
| Emmy | pet form of Emma, Emily or Amelia | #445 | 3,181 | 2010s |
| Nora | short form of Eleanor or Honora | #20 | 30,984 | 2010s |
| Leila | night | #259 | 6,293 | 2010s |
| Ophelia | help (Greek, via an Italian coinage) | #264 | 5,766 | 2020s |
| Helena | #363 | 3,552 | 2010s | |
| Eleanora | #865 | 1,401 | 2020s | |
| Josie | pet form of Josephine | #82 | 12,978 | 2020s |
| Millie | pet form of Mildred, Millicent, Emily, Amelia and others | #73 | 12,731 | 2020s |
| Evalyn | #1,430 | 922 | 2010s |
Brother names for Adelaide
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Fletcher | arrow maker (English surname) | #547 | 2,334 | 2010s |
| Major | #670 | 2,941 | 2010s | |
| Lucian | of Lucius (light) | #462 | 2,930 | 2010s |
| Jones | son of John | #811 | 1,314 | 2020s |
| Solomon | peace | #422 | 3,696 | 2010s |
| Emmett | little Emma (probably) | #121 | 16,023 | 2010s |
| Royal | royal; or from English place names | #476 | 3,948 | 2010s |
| Casper | treasurer (Persian, via Caspar) | #924 | 1,109 | 2020s |
| Enoch | #746 | 1,707 | 2010s | |
| Porter | doorkeeper; or carrier (surname) | #560 | 2,890 | 2010s |
Adelaide's era
Adelaide ranked #289 for girls in 2025, against #272 in 2015. Its best year was 1883, at #179. Names that rose and fell with it share its period feel, which keeps the set consistent.
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, Adelaide included.
Girls: Elizabeth, Maria, Lydia, Cecilia, Julia, Miriam. Boys: Samuel, Wesley, Vincent, Calvin, Victor, Oscar.
Same era, but close to Adelaide
These names follow Adelaide's curve too, but we left them out above because they share a first letter or an ending with Adelaide. 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 Adelaide's since 1880, and its recent number of babies is within about twelve times Adelaide's, so the names are in the same league. Names starting with the same letter as Adelaide or with the same ending are left out, so the names go together without matching. Spellings of Adelaide itself are excluded.