Head to head · Boys' names
Lucca vs Tadeo
#425 vs #427 in 2025
Lucca is a whisker ahead (#425 vs #427 in 2025), but the curves point different ways: Lucca is holding its place on the charts, Tadeo is climbing the charts fast. On momentum, Tadeo has the edge.
Cast your vote
Which one would you pick?
Your gut first, the numbers after — the split shows once you pick.
The tale of the tape
The tape is even: Lucca and Tadeo each lead 3 measures of 6.
Ranks, counts and years are measured in the official US birth record; the classroom and living figures are estimates computed from it. The dot marks the side each measure favours on the charts — more common, not better.
What the records say
146 years of US births, drawn on one scale
Two curves, one scale
Who owned which decade
- 1960s: Lucca —, Tadeo #4136 — Tadeo higher
- 1980s: Lucca —, Tadeo #6081 — Tadeo higher
- 1990s: Lucca #6356, Tadeo #7023 — Lucca higher
- 2000s: Lucca #1668, Tadeo #3306 — Lucca higher
- 2010s: Lucca #802, Tadeo #1229 — Lucca higher
- 2020s: Lucca #478, Tadeo #522 — Lucca higher
Lucca stood higher in 4 of 6 decades; Lucca has held the lead since the 1990s.
Rank by decade
| Decade | Lucca | Tadeo |
|---|---|---|
| 1960s | — | #4136 |
| 1980s | — | #6081 |
| 1990s | #6356 | #7023 |
| 2000s | #1668 | #3306 |
| 2010s | #802 | #1229 |
| 2020s | #478 | #522 |
Average national rank across each decade. A dash means the name sat outside the recorded top of that decade.
The names themselves
Meaning, roots, sound and the people who carried each
Where each name comes from
Lucca
'from Lucania' through Luca and Lucas — or simply the Tuscan city of Lucca
As a spelling of the Italian given name Luca, it goes back through Latin Lucas to Greek Loukas, understood as 'man from Lucania', a region of southern Italy. The double-c spelling is instead the Tuscan place name, whose own root is not settled — pre-Roman, and read variously as marsh or sacred grove. A frequent popular link to Latin lux, 'light', is a resemblance rather than a descent.
Loukas → Lucas → Luca → Lucca
How it traveled
Greek Loukas gave Latin Lucas, the name of the gospel writer, and that name spread with Christianity into every language of Europe. Italian trimmed it to Luca, which has been in ordinary use on the peninsula for centuries and remains one of the standard boys' names there.
Tadeo
Debated — either "heart" or a short form of a Greek name meaning "gift of God"
Two serious readings compete. One traces Greek Thaddaios to an Aramaic root connected with the breast or heart. The other treats it as a Greek pet form of a name like Theodoros or Theodotos, both built on the idea of a gift from God. Neither has won, and the ancient sources do not settle it.
Thaddaios → Thaddaeus → Taddeo → Tadeo
How it traveled
The name begins as Greek Thaddaios, the byname given to one of the twelve apostles — the figure called Thaddaeus in Matthew and Mark, and known in Spanish as San Judas Tadeo. Latin took it as Thaddaeus, and from there each language reshaped it: Taddeo in Italy, Tadeusz in Poland, Tadeo in Spanish.
Where a reading is contested the note says so — this page does not turn a guess into a fact. The chain is each name's recorded forms, oldest first; the story is its opening, told in full on the name's own page.
Out loud, and in short
Lucca
LOO-kah
Two syllables, stress on the first. In Italian the double c is a crisp k and the final vowel stays open; American speakers often soften the ending to LOO-kuh, which nobody will correct.
- Luc — Informal clipping; also a standalone given name in French.
- Lu — Short, family-level form, used the same way for Lucas and Lucia.
- Luccy — Playful diminutive heard mostly at home and in the early years.
Tadeo
tah-DEH-oh
Stress on the middle syllable in Spanish. English speakers who meet it cold sometimes try TAD-ee-oh; one correction usually fixes it, since every letter is doing the job it looks like it is doing.
- Teo — The most natural short form in Spanish, and a standalone given name in its own right.
- Tadeito — Spanish diminutive, used affectionately within families rather than at school.
- Tad — The English-language clipping, shared with Thaddeus; used more by English speakers than Spanish ones.
- Tade — An informal two-syllable trim heard among Spanish speakers.
Is it right for you
The differences that decide it, laid out by what you want
Choose by what you want
Choose Lucca if you want…
- a name holding steadyLucca is holding its place on the charts
Choose Tadeo if you want…
- a name on the way upup 275 places on the charts in five years
Each line is a measured difference between the two names — a rank, a count, a recorded form — never a judgement of either. Save the one that answers your question; it lands on your shortlist.
The trade-offs, name by name
Lucca
Strengths
- Two syllables, five letters, and it reads correctly on first sight for almost any English speaker.
- Travels without translation: Luca, Lucas, Luke and Loukas are all the same name in different languages.
- Ends in an open vowel, so it sits easily against consonant-first surnames.
To consider
- The single-c Luca is far more widespread, so expect a lifetime of gentle spelling corrections — and of forms coming back as Luca or Luka.
- Because the name is essentially unspaced from Luca in sound, no one will hear the difference you chose. The doubled c is a thing seen, not heard.
- This name's wave is very new, so a child called Lucca will likely be the only one in the class — and among adults, the name is still rare enough to prompt a question.
Tadeo
Strengths
- Spelled the way it sounds in both Spanish and English — no silent letters, no h to explain, unlike the English Thaddeus.
- Has a ready-made short form in Teo, which works on its own and travels easily between languages.
- A documented line back to Greek and Latin, and living forms in Italian, Polish, Czech and French.
To consider
- It is climbing quickly. A child born now may find the name noticeably more common among younger kids by the time they finish school than it is among their older cousins.
- Outside Texas, California and Illinois, expect to spell it out and to hear TAD-ee-oh occasionally before people settle into tah-DEH-oh.
- Neighboring spellings exist — Thadeo, Taddeo, Thaddeus — so forms and rosters will sometimes come back altered.
Documented properties of each name — how it spells, travels and shortens — not opinions about the child.
How each is likely to age
Lucca
40%chance Lucca feels dated by 2040
Lucca sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
Tadeo
55%chance Tadeo feels dated by 2040
Tadeo is climbing fast right now. Steep climbs tend to come with steep descents — the quicker a name arrives, the more firmly it belongs to its moment.
A reading of where each name sits on the long naming cycle — computed, not measured, and explained on the data page.
With your last name
Say both in full. The notes are facts about letters and sound — a rhyme, a shared initial, the monogram — not a verdict on either name.
Type a last name to hear Lucca and Tadeo in full.
Weighing the whole shortlist? Run the full comparison — up to eight names with your last name, initials, classroom projections and a printable report.
Decide together
Nobody names a baby alone
Still torn between Lucca and Tadeo?
Put both to the vote.
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More than two in the running? Settle it with a bracket or run the full comparison with your last name.
More head-to-heads
Same measures, different pair. Sixty more are dealt daily in the arena.
Lists these names appear on
- Names far more common than their rank admits
- Names ending in -eo
- The best baby names starting with T
- all guides
Where Lucca and Tadeo each sit in the library — alternatives in the same style, ranked by the same records.
Lucca or Tadeo — the short answers
- Which is more popular, Lucca or Tadeo?
- Lucca, in 2025: Lucca ranked #425 with 757 babies; Tadeo ranked #427 with 753 babies.
- Which name is rising faster, Lucca or Tadeo?
- Tadeo. Over the last five years Lucca moved up 31 places; Tadeo moved up 275 places.
- Which is the older name, Lucca or Tadeo?
- Lucca entered the US charts in 1993; Tadeo entered the US charts in 1968. On the American record, Tadeo is the older name.
- How many people are named Lucca and Tadeo?
- About 7,800 people named Lucca are estimated to be alive in the US today. About 5,800 people named Tadeo are estimated to be alive in the US today.
- Will there be other Luccas or Tadeos in the classroom?
- Lucca will almost certainly be the only one in school. Tadeo will almost certainly be the only one in school.
US figures from the Social Security Administration, 1880–2025. Votes are battle voters on this site, not the birth record. Data & methodology
Keep playing
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