deletionvsdelusionWhich spelling fits?

Which to use

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

#21,489
“deletion” frequency rank
#17,815
“delusion” frequency rank
39304
confusion score

Side-by-Side Comparison

Feature deletion delusion
Definition An item that has been or will be deleted. A false belief that is resistant to confrontation with actual facts.

Where the eye mixes deletion and delusion

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. deletion and delusion follow the identical consonant-vowel pattern (CVCVCVVC). Same shape at a glance is often the real trap, independent of shared letters.

8 ch
deletion
8 ch
delusion

Visual trap between deletion and delusion

A purely visual mix-up. deletion (/dɪˈliːʃən/) and delusion (/dɪˈl(j)uːʒ(ə)n/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 39304, derived from the frequency rank of both members and their visual similarity.

deletion is recorded at frequency rank #21,489, classified as anoun, pronounced /dɪˈliːʃən/. delusion is at rank #17,815, tagged as anoun, pronounced /dɪˈl(j)uːʒ(ə)n/.

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 39304, this pair ranks #277,918 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of deletion vs delusion

Shared letters: deilno. Private to "deletion": t. Private to "delusion": su.

"deletion" · 8 letters · shape CVCVCVVC  ·  "delusion" · 8 letters · shape CVCVCVVC

Known mistypes of this pair

  • deletion ← ddeletion · deeltion · deleiton · delesion · deletino · deletionn · deletoin · delettion
  • delusion ← ddelusion · dellusion · delsuion · deluison · delusino · delusionn · delusoin · delussion

Frequently Asked Questions

Do "deletion" and "delusion" mean the same thing in a sentence?
No. They are said differently (/dɪˈliːʃən/ versus /dɪˈl(j)uːʒ(ə)n/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "deletion" or "delusion"?
"delusion" is the more common of the two: it sits at frequency rank #17,815 in our English list, against #21,489 for "deletion". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "deletion" and "delusion" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "deletion" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "delusion" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #277,918 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "deletion" and "delusion" also get mixed up with nearby pairs, the highest-scored neighbour is "deletion vs demotion". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #277,918 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list