sisu
/ˈsɪsʉː/
"sisu" is a 4-letter English headword indexed on PlainSpell.
The verdict
“sisu” is uncommon English (frequency #97,555 among 6,566 “S” headwords), classed as a noun. The kind of spelling people second-guess.
- #97,555
- frequency rank, English
- 6,566
- “S” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Strength of will in the face of adversity; grit; perseverance; determination; regarded as an integral part of Finnish culture.
Corpus desk
Index EN-sisu · sisu · English
sisu · rank #97,555 · 0 variants · 0 confusables
- FREQ-RARE #97,555
- LEN-MID 4 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 6,566
- PHOTO-FINISH singsong
Nearest frequency peer: singsong (-1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “sisu”
Sparse band: bars invert rank so rarer forms read shorter
- shucked
shucked
2,451 corpus weight
- simvastatin
simvastatin
2,449 corpus weight
- singsong
singsong
2,447 corpus weight
- sisu
sisu
2,446 corpus weight
- Slauson
Slauson
2,445 corpus weight
- smartcard
smartcard
2,443 corpus weight
What this shows Long-tail view: where “sisu” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | sisu |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈsɪsʉː/ |
| Letters | 4 |
| Frequency rank | #97,555 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “sisu” in English
Rare enough to double-check
sisu is uncommon English at frequency #97,555 among 6,566 “S” headwords, classed as anoun, transcribed /ˈsɪsʉː/. Rarity is why readers land here mid-draft. Gloss: "Strength of will in the face of adversity; grit; perseverance; determination; regarded as an integral part of Finnish culture.".
Our edit-distance generator produced no likely misspellings for sisu, typically a sign the spelling maps closely to how the word sounds. We don't track a confusable pairing for this entry, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: Borrowed from Finnish sisu, documented in English since at least 1940. The correct English form is sisu, spelled S-I-S-U.
Definition
- 1Strength of will in the face of adversity; grit; perseverance; determination; regarded as an integral part of Finnish culture.
Recorded use
Wiktionary examplesThese source excerpts show how sisu appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Last week the Finns gave the world a good example of sisu by carrying the war into Russian territory on one front while on another they withstood merciless attacks by a reinforced Russian Army.
People living in northern climates need plenty of sisu.
Etymology
Borrowed from Finnish sisu, documented in English since at least 1940.
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 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
How do you spell "sisu"?
What does "sisu" mean?
How do you pronounce "sisu"?
What is the origin of the word "sisu"?
Is PlainSpell free to use?
Similar English words by spelling shape
Same letter count and similar misspelling depth for "sisu", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 4 letters (nearest by frequency rank).