Silje vs Thea
Silje and Theacompared on official birth-registration statistics and Namewise's recorded data. This page states what each name's record shows — it never picks a winner or scores one name against the other.
Head to head
Ranks are only compared within one published list and one year. Two ranks from different years, from a boys' and a girls' list, or from different registrars are not comparable, so they are not placed side by side.
Norway · Girls
In 2025, Silje was ranked #286 and Thea #50 among girls in Norway.
Silje and Thea over time
Silje and Thea appear together in 1 published list, across 60 years of shared records. Silje held the stronger position in more years in 1 of them, Thea in 0.
The order between them changed and held in one of those lists — a change in that published list, never a claim that one name displaced the other.
Silje reached its own highest recorded position earlier in 1 of those lists, and Thea in none. Each position is a place inside its own list, so this compares when they peaked and never how high.
Counted list by list. Two names in the same published list are measured on the same scale in the same year, so those comparisons are real — but positions from different lists are not, so nothing here is combined into an overall standing.
How this pair is related
The relationship kinds these two qualify for, each under its own stated rule. Every one is drawn from a list they both appear in.
- One moved ahead of the other
In 1999, Thea moved ahead of Silje in Norway · Girls — #2 and #10 the year before became #9 and #6.
- Longest-running competitions
Silje and Thea were both ranked in Norway · Girls for 60 years, from 1966 to 2025, ending at #286 and #50.
List by list
Norway · Girls60 shared years, 1966–2025
Silje held the stronger position in 33 of those years, Thea in 27.
Highest recorded here: Silje #1 in 1982, Thea #1 in 2006.
The order changed in 1999: Thea moved ahead. In 1998 they stood at #2 and #10; by 1999 that had become #9 and #6.
Most recent shared year, 2025: Silje #286, Thea #50.
Two names moving past each other in a ranking is a fact about the ranking. Namewise does not claim one name displaced the other, that families chose between them, or that either influenced the other — none of that is in this data.
Side by side
| Field | Silje | Thea |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Editorially researched profile |
| Gender usage | female | female |
| Meaning | Not yet recorded | A short form of Dorothea, Theodora, Theresa and other similar-sounding Greek-rooted names. |
| Origin | Not yet recorded | Greek (via Germanic/Scandinavian transmission) |
| Pronunciation | /ˈteː.a/ | |
| Syllables | 2 | 1 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | NO | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | Norway · Girls #286 (2025) | Norway · Girls #50 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | 90/100 |
| Spelling simplicity (demonstration score) | 94/100 | 95/100 |
| International familiarity (demonstration score) | 40/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Thea has a recorded origin (Greek (via Germanic/Scandinavian transmission)); Silje does not have one recorded yet.
- Silje has 2 syllables, compared with 1 for Thea.
- A meaning is recorded for Thea; Silje doesn't have one written yet.
- Both names have recorded usage in NO.
How each name got here
Silje
Popularity journey
First recorded1966
First recorded at #542 among girls in Norway in 1966 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1966–2025
Highest recorded position: #1 among girls in Norway, in 1982 (recorded 1966–2025).
Norway · Girls
Most recent2025
Most recently recorded at #286 among girls in Norway, in 2025.
Norway · Girls
Thea
Popularity journey
First recorded1950
First recorded at #380 among girls in Norway in 1950 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1950–2025
Highest recorded position: #1 among girls in Norway, in 2006 (recorded 1950–2025).
Norway · Girls
Most recent2025
Most recently recorded at #50 among girls in Norway, in 2025.
Norway · Girls