seis
The verdict
“seis” is in the everyday core of Portuguese, ranked #542 in Portuguese word frequency and used as a numeral.
- #542
- frequency rank, Portuguese
- 4
- letters
- 5
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - número equivalente a cinco mais um; cardinalidade de um conjunto que contenha seis elementos distintos; representado pelo símbolo 6 (algarismos arábicos) ou VI (algarismos romanos)
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | seis |
| Language | Portuguese |
| Part of speech | Numeral |
| Letters | 4 |
| Frequency rank | #542 |
| Misspellings tracked | 5 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “seis” sits in Portuguese frequency
Spelling & Dictionary Insight
The Portuguese entry for seis is 4 letters long, classified as a numeral. Corpus data places it at rank #542 in overall Portuguese word frequency, putting it firmly in the everyday core of the language. The dominant gloss from Wiktionary reads: "número equivalente a cinco mais um; cardinalidade de um conjunto que contenha seis elementos distintos; representado pelo símbolo 6 (algarismos arábicos) ou VI (algarismos romanos)".
Our generated misspelling index lists 5 likely wrong-spelling variants for seis, with forms such as "esis", "seiss", and "sesi". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 20 confusable-pair relationships, "si", "ser", "seu", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
No documented word history exists for this headword, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct Portuguese form is seis, spelled S-E-I-S.
Definition
- 1número equivalente a cinco mais um; cardinalidade de um conjunto que contenha seis elementos distintos; representado pelo símbolo 6 (algarismos arábicos) ou VI (algarismos romanos)
This word in other languages
Common misspellings
Also misspelled as: esis,seiss,sesi,sies,sseis
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of seis - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 Portuguese corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "seis"?
What does "seis" mean?
What words are commonly confused with "seis"?
What language does "seis" come from?
Is PlainSpell free to use?
Using “seis”
The practical upshot for anyone who landed here from a spell-check.
- The one correct Portuguese spelling is S-E-I-S - every other letter order is a misspelling in standard orthography.
- Don't mix it up with “si” - see the side-by-side comparison. seis vs si
- Browse more Portuguese words and confusable pairs in the same reference. Portuguese words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.