diagnosis
/daɪəɡˈnəʊsɪs/
"diagnosis" is a 9-letter English headword indexed on PlainSpell.
The verdict
“diagnosis” has 13 generated spelling variants in the English index at frequency #5,121. The variants make it a useful spelling check.
- #5,121
- frequency rank, English
- 3,470
- “D” headwords
- 13
- tracked misspellings
- 4
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The process of, or an instance of, identification of the nature and cause of a medical condition or illness.
Corpus desk
Index EN-diagnosis · diagnosis · English
diagnosis · rank #5,121 · 13 variants · 4 confusables
- FREQ-COMMON #5,121
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-MID 4 pairs
- VAR-HIGH 13 variants
- BOOK-MID 3,470
- PHOTO-FINISH developer
Nearest frequency peer: developer (-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.
Rank peers near misspelling magnet “diagnosis”
Same rarity band: useful when a typo lands on a peer headword
- depend
depend
94,882 corpus weight
- developer
developer
94,881 corpus weight
- diagnosis
diagnosis
94,880 corpus weight
- dismissed
dismissed
94,879 corpus weight
- distinguish…
distinguished
94,878 corpus weight
- dose
dose
94,877 corpus weight
What this shows “diagnosis” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.
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 | diagnosis |
| Language | English |
| Part of speech | Noun |
| IPA | /daɪəɡˈnəʊsɪs/ |
| Letters | 9 |
| Frequency rank | #5,121 |
| Misspellings tracked | 13 |
| Confusable pairs | 4 |
| Source | Wiktionary (kaikki.org) |
Frequency seat of misspelling magnet “diagnosis”
A misspelling magnet
The generator records 13 spelling variants around diagnosis (IPA /daɪəɡˈnəʊsɪs/), anoun. Corpus frequency is #5,121 among 3,470 “D” headwords. Wiktionary lists 3 senses, so context still picks the gloss.
Our generated misspelling index lists 13 likely wrong-spelling variants for diagnosis, with forms such as "daignosis", "ddiagnosis", and "diaggnosis". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 4 confusable-pair relationships, "diagnostic", "diagnostics", "diagnose", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
Etymologically, the entry records: From Latin diagnōsis, from Ancient Greek διάγνωσις (diágnōsis), from διαγιγνώσκω (diagignṓskō, “to discern”), from διά (diá, “through”) + γιγνώσκω (gignṓskō, “to know”). The correct English form is diagnosis, spelled D-I-A-G-N-O-S-I-S.
Definition
- 1The process of, or an instance of, identification of the nature and cause of a medical condition or illness.
- 2The process of, or an instance of, identification of the nature and cause of something (of any nature).
- 3A written description of a species or other taxon serving to distinguish that species from all others; especially a description written and published in Latin.
Recorded use
Wiktionary examplesThese source excerpts show how diagnosis appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Diagnosis is a challenging art informed by wide-ranging science.
He was given the wrong treatment due to an erroneous diagnosis.
Etymology
From Latin diagnōsis, from Ancient Greek διάγνωσις (diágnōsis), from διαγιγνώσκω (diagignṓskō, “to discern”), from διά (diá, “through”) + γιγνώσκω (gignṓskō, “to know”).
This word in other languages
Common misspellings
Also misspelled as:
- daignosis
- ddiagnosis
- diaggnosis
- diagnnosis
- diagnoiss
- diagnosiss
- diagnossi
- diagnossis
- diagnsois
- diagonsis
- diangosis
- diganosis
- idagnosis
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of diagnosis - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.
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 "diagnosis"?
What does "diagnosis" mean?
What words are commonly confused with "diagnosis"?
How do you pronounce "diagnosis"?
What is the origin of the word "diagnosis"?
Is PlainSpell free to use?
Similar English words by spelling shape
Same letter count and similar misspelling depth for "diagnosis", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).
Similar misspelling depth
Headwords with a similar count of attested misspellings (13 here; floor ≥5).