well-defined
"well-defined" is a 11-letter English headword indexed on PlainSpell.
The verdict
“well-defined” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 12
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Having a clean and distinct outline.
Corpus desk
Index EN-well-defined · well-defined · English
well-defined · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 12 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "W" thin
- PHOTO-UNK Peer pending
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.
| Property | Value |
|---|---|
| Headword | well-defined |
| Language | English |
| Part of speech | Adjective |
| Letters | 12 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “well-defined” sits in English frequency
Rare enough to double-check
well-defined is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. 3 senses are on record.
We couldn't generate a plausible misspelling set for well-defined, a sign its spelling follows regular English conventions. Our dataset records no confusable match here, a sign it's visually distinctive enough not to be mixed up with another word.
Wiktionary doesn't record an etymology for this headword, so spelling patterns must be inferred from the word's phoneme-to-grapheme mapping rather than from a documented borrowing chain. The correct English form is well-defined, spelled W-E-L-L---D-E-F-I-N-E-D.
Definition
- 1Having a clean and distinct outline.
- 2Accurately and precisely described or specified.
- 3Defined in an unambiguous and consistent way: specifically, such that any two objects implied to be identical are indeed identical.
Recorded use
Wiktionary exampleThese source excerpts show how well-defined appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
AMVAC Chemical Corp. spokesman Brian Maddox said the company does not sell naled into China and has “no idea how it may have been used or how much is applied. By contrast, the application of Naled in the US is well-defined by the USEPA label and is highly controlled to ensure compliance with rigorous US standards.”
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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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.