ultrathin
"ultrathin" is a 9-letter English headword indexed on PlainSpell.
The verdict
“ultrathin” is uncommon English (frequency #76,422 among 1,433 “U” headwords), classed as an adjective. The kind of spelling people second-guess.
- #76,422
- frequency rank, English
- 1,433
- “U” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Extremely thin; of utmost thinness.
Corpus desk
Index EN-ultrathin · ultrathin · English
ultrathin · rank #76,422 · 0 variants · 0 confusables
- FREQ-RARE #76,422
- LEN-LONG 9 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 1,433
- PHOTO-FINISH twosome
Nearest frequency peer: twosome (-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 “ultrathin”
Sparse band: bars invert rank so rarer forms read shorter
- tuberous
tuberous
23,585 corpus weight
- turbot
turbot
23,584 corpus weight
- twosome
twosome
23,580 corpus weight
- ultrathin
ultrathin
23,579 corpus weight
- unamerican
unamerican
23,578 corpus weight
- uncultivated
uncultivated
23,577 corpus weight
What this shows Long-tail view: where “ultrathin” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | ultrathin |
| Language | English |
| Part of speech | Adjective |
| Letters | 9 |
| Frequency rank | #76,422 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “ultrathin” in English
Rare enough to double-check
ultrathin is uncommon English at frequency #76,422 among 1,433 “U” headwords, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Extremely thin; of utmost thinness.".
Our edit-distance generator produced no likely misspellings for ultrathin, a straightforward case of a spelling with little room for common typos. This entry stands alone in our confusable dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From ultra- + thin. The correct English form is ultrathin, spelled U-L-T-R-A-T-H-I-N.
Definition
- 1Extremely thin; of utmost thinness.
Recorded use
Wiktionary examplesThese source excerpts show how ultrathin appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
When you build your esteem on the media's ultrathin, superslim image, you are going to lose by comparison.
Planar metamaterials with subwavelength thickness, or metasurfaces, consisting of single-layer or few-layer stacks of planar structures, can be readily fabricated using lithography and nanoprinting methods, and the ultrathin thickness in the wave propagation direction can greatly suppress the undesirable losses.
Etymology
From ultra- + thin.
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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "ultrathin", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).