diagnosesvsdiagnosisWhat's the difference?

Which to use

“diagnoses” and “diagnosis” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#21,183
“diagnoses” frequency rank
#5,121
“diagnosis” frequency rank
26304
confusion score

Side-by-Side Comparison

Feature diagnoses diagnosis
Definition plural of diagnosis The process of, or an instance of, identification of the nature and cause of a medical condition or illness.

Where the spellings diverge

Shared letters are muted; the letters that actually set diagnoses and diagnosis apart are highlighted. They share 8 letters in sequence, which is exactly why the eye skips the difference.

9 ch
diagnoses
9 ch
diagnosis

Spelling & Dictionary Insight

A purely visual mix-up. diagnoses (/daɪəɡˈnəʊsiz/) and diagnosis (/daɪəɡˈnəʊsɪs/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by a single letter - e in “diagnoses” becomes i in “diagnosis”. Our composite confusion score for this pair is 26304, derived from the frequency rank of both members and their visual similarity.

diagnoses is recorded at frequency rank #21,183, classified as anoun, pronounced /daɪəɡˈnəʊsiz/. diagnosis is at rank #5,121, tagged as anoun, pronounced /daɪəɡˈnəʊsɪs/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 26304, this pair ranks #387,692 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of diagnoses vs diagnosis

Shared letters: adginos. Private to "diagnoses": e. Private to "diagnosis": -.

"diagnoses" · 9 letters · shape CVVCCVCVC  ·  "diagnosis" · 9 letters · shape CVVCCVCVC

Known mistypes of this pair

  • diagnosesdaignoses · ddiagnoses · diaggnoses · diagnnoses · diagnoess · diagnosess · diagnosses · diagnsoes
  • diagnosisdaignosis · ddiagnosis · diaggnosis · diagnnosis · diagnoiss · diagnosiss · diagnossi · diagnossis

Frequency comparison

diagnoses#21,183
diagnosis#5,121

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "diagnoses" and "diagnosis" be used interchangeably?
No. They are said differently (/daɪəɡˈnəʊsiz/ versus /daɪəɡˈnəʊsɪs/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "diagnoses" or "diagnosis"?
"diagnosis" is the more common of the two: it sits at frequency rank #5,121 in our English list, against #21,183 for "diagnoses". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering diagnoses vs diagnosis

The fastest way to pick the right one every time.

  • Read both glosses above and match the meaning you intend, only context separates this pair.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “diagnoses” entry
  • Browse more pairs most likely to be confused. Most confusable

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list