underlain
/ʌndəɹˈleɪn/
"underlain" is a 9-letter English headword indexed on PlainSpell.
The verdict
“underlain” is uncommon English (frequency #93,277 among 23,789 “U” headwords), classed as a verb. The kind of spelling people second-guess.
- #93,277
- frequency rank, English
- 23,789
- “U” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - past participle of underlie
Corpus desk
Index EN-underlain · underlain · English
underlain · rank #93,277 · 0 variants · 0 confusables
- FREQ-RARE #93,277
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 23,789
- PHOTO-FINISH ultramafic
Nearest frequency peer: ultramafic (-2 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 neighbourhood for “underlain”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- Tyburn
Tyburn
6,732 corpus weight
- ultramafic
ultramafic
6,726 corpus weight
- underlain
underlain
6,724 corpus weight
- unescorted
unescorted
6,722 corpus weight
- unfulfilling
unfulfilling
6,721 corpus weight
- unpowered
unpowered
6,716 corpus weight
What this shows Bars show where “underlain” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | underlain |
| Language | English |
| Part of speech | Verb |
| IPA | /ʌndəɹˈleɪn/ |
| Letters | 9 |
| Frequency rank | #93,277 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “underlain” sits in English frequency
Rare enough to double-check
underlain is uncommon English at frequency #93,277 among 23,789 “U” headwords, classed as averb, transcribed /ʌndəɹˈleɪn/. Rarity is why readers land here mid-draft. Gloss: "past participle of underlie".
No misspelling variants are generated for underlain in our index, since its letter pattern doesn't lend itself to common typo substitutions. Our confusable-pair dataset has no match for it, since its spelling is unusual enough that it doesn't cluster with a lookalike.
No documented word history exists for this headword, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is underlain, spelled U-N-D-E-R-L-A-I-N.
Definition
- 1past participle of underlie
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.
PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 6, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "underlain", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).
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.