Sái
surname · Latin script
Meaning: ominous, inauspicious, unlucky
(measured from records)Officially recorded in 1 country
Sái is a surname written in the Latin script, with more bearers in the United States than in any other country.
- USUnited States1 in 58K(measured from records)
- SESweden1 in 15K
- DKDenmark1 in 63K
carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Record sources
- 38 (measured from records)
- 1 in 15K (inferred from the name graph)
5,716 people, 2020
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Sweden
measured from records inferred from the name graph
Spellings & scripts
(measured from records)One other spelling is counted as the same name:
Locally spelled Sai in US United States.
Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.
Meaning & origin
(measured from records)ominous, inauspicious, unlucky
Cited for this meaning 1
- kaikki.org Wiktionary extract (IPA + transliterations)
Attested across 28 languages in the etymology graph.
Where in the world
(measured from records)Sái counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.
Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.
5,716 people counted by Census Bureau — First Name Frequency 2020 by sex, 2020. Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.
Registers cited: Census Bureau — First Name Frequency 2020 by sex; Skatteverket — Sök hur många som har ett visst namn (living population); DVV — Etunimitilasto (Finnish given names register); DVV — Nimipalvelu (Finnish name service, per-name lookup); dane.gov.pl — PESEL given names (first + second name position, 2026-01-20); dane.gov.pl — PESEL living persons (surnames); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); Þjóðskrá Íslands — Name frequencies (NafnTíðni, registry). Figures without a register are Mondonomo estimates; see Methodology.
Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).
Other recorded senses
(measured from records)Sái is also recorded in 2 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Guarani, skirt
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
In ko-pro, новый
as a wordStarLing Tower of Babel etymological databases (Starostin et al.)
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Notable people with this name
(measured from records)- Cai Lunb. 48CNnot in their usual nameChinese official credited with inventing paper (died 121)
- Cai Yuanpeib. 1868CNnot in their usual nameChinese educator, Esperantist and the president of Peking University (1868-1940)
- Cai Qib. 1955CNnot in their usual nameFirst Secretary of the Secretariat of the Chinese Communist Party
- Tsai Ing-wenb. 1956TWnot in their usual name14th and 15th President of Republic of China (Taiwan)
- Tsai Ming-liangb. 1957MYnot in their usual nameMalaysian-Taiwanese filmmaker (born 1957)
- Amy Chuab. 1962USnot in their usual nameAmerican law professor and writer (born 1962)
- Jolin Tsaib. 1980TWnot in their usual nameTaiwanese singer, songwriter, and actress (born 1980)
- Charlene Choib. 1982CAnot in their usual nameHong Kong actress and singer
- Lauren Tsaib. 1998USnot in their usual nameChinese–American model and illustrator
- Albert Tsaib. 2004USnot in their usual nameAmerican actor (born 2004)
The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).
Evidence
(measured from records)No register attests this spelling yet
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Sái mean, and where does it come from?
- ominous, inauspicious, unlucky Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
- In which country does Sái have the most bearers?
- In the United States, the national register counted about 5.7 thousand people named Sái, more than in any other country we hold, where it is most often spelled sai.
- Where is Sái most common?
- Measured as a share of residents rather than as a count, Sái is densest in Sweden — about 1 in 15 thousand people — even though United States holds more of our records for it.
- How common is the name Sái?
- In the United States, the national register counted 5,716 people named Sái in 2020, about 1 in 58 thousand residents.
What do you want to know about Sái?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/s%C3%A1iThe payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.
About this data
measured from records inferred from the name graph machine-generated
These figures come from the data snapshot of and will change as it is rebuilt.
Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.
Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.
Cite this page Mondonomo, “Sái”. Data snapshot 2026-10-13.