decovsdexWhich spelling fits?

Which to use

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

#16,886
“deco” frequency rank
#20,608
“dex” frequency rank
37494
confusion score

Side-by-Side Comparison

Feature deco dex
Definition Decompression. An order or factor of ten.

Letter map: deco vs dex

Shared letters muted; letters that set deco and dex apart highlighted. Shared run: 2.

4 ch
deco
3 ch
dex

Pair insight - deco / dex

deco and dex are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 37494, derived from the frequency rank of both members and their visual similarity.

deco is recorded at frequency rank #16,886, classified as anoun. dex is at rank #20,608, tagged as anoun.

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 37494, this pair ranks #294,095 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of deco vs dex

Shared letters: de. Private to "deco": co. Private to "dex": x.

"deco" · 4 letters · shape CVCV  ·  "dex" · 3 letters · shape CVC

Known mistypes of this pair

  • decodceo · ddeco · decco · deoc · edco

Frequently Asked Questions

Can "deco" and "dex" be used interchangeably?
No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
Frequency check: "deco" vs "dex" - which ranks higher?
"deco" is the more common of the two: it sits at frequency rank #16,886 in our English list, against #20,608 for "dex". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Done with this confusable. These links stay specific to "deco" and "dex".

  • Full dictionary entry for "deco" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "dex" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #294,095 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "deco" and "dex" also get mixed up with nearby pairs, the highest-scored neighbour is "dex vs dox". 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 #294,095 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