improsperous
"improsperous" is a 12-letter English headword indexed on PlainSpell.
The verdict
“improsperous” 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) - not prosperous
Corpus desk
Index EN-improsperous · improsperous · English
improsperous · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 12 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "I" 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 | improsperous |
| Language | English |
| Part of speech | Adjective |
| Letters | 12 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “improsperous” in English
Rare enough to double-check
improsperous is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "not prosperous".
improsperous doesn't appear in our generated misspelling index, and the word's spelling is regular enough that our generator found nothing worth flagging. No confusable counterpart is on file for this word, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: From im- + prosperous. The correct English form is improsperous, spelled I-M-P-R-O-S-P-E-R-O-U-S.
Definition
- 1not prosperous
Recorded use
Wiktionary exampleThese source excerpts show how improsperous appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Seven revolving years are wholly run, Since the improsperous voyage we begun.
Etymology
From im- + prosperous.
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.