isu
"isu" is a 3-letter English headword indexed on PlainSpell.
The verdict
“isu” sits in 20 confusable pairs (corpus #37,989) as a noun. The look-alike neighbours are the real trap.
- #37,989
- frequency rank, English
- 2,140
- “I” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An individual seat in the loft-like balcony of a sumo arena.
Corpus desk
Index EN-isu · isu · English
isu · rank #37,989 · 0 variants · 20 confusables
- FREQ-MID #37,989
- LEN-MID 3 letters
- VOW-2 2 vowels
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 2,140
- PHOTO-FINISH irate
Nearest frequency peer: irate (-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.
Frequency neighbours of confusable “isu”
Peers at similar corpus weight, separate from look-alike pairs below
- inverter
inverter
62,015 corpus weight
- Iona
Iona
62,014 corpus weight
- irate
irate
62,013 corpus weight
- isu
isu
62,012 corpus weight
- Iverson
Iverson
62,011 corpus weight
- jeju
jeju
62,009 corpus weight
What this shows Bars place “isu” against nearest ranked English headwords, not a reprint of the confusable-pair desk.
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 | isu |
| Language | English |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #37,989 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “isu”
Easy to mix with look-alikes
The spelling risk for isu is neighbouring look-alikes ("it", "IV", …), not just typos; it is anoun. Frequency #37,989 among 2,140 “I” headwords. Gloss: "An individual seat in the loft-like balcony of a sumo arena.".
No misspelling variants are generated for isu in our index, since its letter sequence doesn't invite the usual edit-distance slips. It also participates in 20 confusable-pair relationships, "it", "IV", "iz", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: Borrowed from Japanese 椅子. The correct English form is isu, spelled I-S-U.
Definition
- 1An individual seat in the loft-like balcony of a sumo arena.
Etymology
Borrowed from Japanese 椅子.
Synonyms
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 "isu"?
What does "isu" mean?
What words are commonly confused with "isu"?
What is the origin of the word "isu"?
Is PlainSpell free to use?
Similar English words by spelling shape
Same letter count and similar misspelling depth for "isu", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).