Denis vs Jeff
Denis and Jeffcompared 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.
Republic of Ireland · Boys
In 2025, Denis was ranked #232 and Jeff #829 among boys in Republic of Ireland.
England and Wales · Boys
In 2024, Denis was ranked #434 and Jeff #5119 among boys in England and Wales.
Denis and Jeff over time
Denis and Jeff appear together in 2 published lists, across 46 years of shared records. Denis held the stronger position in more years in 2 of them, Jeff in 0.
In none of those lists did their order change and stay changed.
Each reached its own highest recorded position first in 1 of the lists they share.
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.
List by list
England and Wales · Boys23 shared years, 1996–2024
Denis held the stronger position in 23 of those years, Jeff in 0.
Highest recorded here: Denis #262 in 2020, Jeff #1235 in 1996.
The order between them never changed and held in this list.
Most recent shared year, 2024: Denis #434, Jeff #5119.
Republic of Ireland · Boys23 shared years, 1985–2025
Denis held the stronger position in 23 of those years, Jeff in 0.
Highest recorded here: Denis #55 in 1985, Jeff #203 in 1999.
The order between them never changed and held in this list.
Most recent shared year, 2025: Denis #232, Jeff #829.
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 | Denis | Jeff |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | Not yet recorded | Not yet recorded |
| Origin | Not yet recorded | Not yet recorded |
| Pronunciation | Not yet recorded | Not yet recorded |
| Syllables | 2 | 1 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, IE, NO, NZ | GB-ENW, IE |
| Most recent popularity observation | Republic of Ireland · Boys #232 (2025) | Republic of Ireland · Boys #829 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 94/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 60/100 |
| Data Confidence | medium | medium |
What the data shows
- Denis has 2 syllables, compared with 1 for Jeff.
- Both names have recorded usage in GB-ENW, IE.
How each name got here
Denis
Popularity journey
First recorded1952
First recorded at #65 among boys in New South Wales, Australia in 1952 — the earliest year that source publishes this name, not necessarily the earliest it was used.
New South Wales, Australia · Boys
Highest recorded1964–2025
Highest recorded position: #21 among boys in Republic of Ireland, in 1964 (recorded 1964–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #232 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys
Jeff
Popularity journey
First recorded1985
First recorded at #304 among boys in Republic of Ireland in 1985 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1985–2025
Highest recorded position: #203 among boys in Republic of Ireland, in 1999 (recorded 1985–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #829 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys