deciphervsdecipheredWhich spelling fits?

Which to use

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

#24,138
“decipher” frequency rank
#45,319
“deciphered” frequency rank
69457
confusion score

Side-by-Side Comparison

Feature decipher deciphered
Definition To convert a code or cipher to plain text. simple past and past participle of decipher

Letter map: decipher vs deciphered

Shared letters muted; letters that set decipher and deciphered apart highlighted. Shared run: 8.

8 ch
decipher
10 ch
deciphered

Pair insight - decipher / deciphered

decipher and deciphered 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 2 extra letter(s) - “decipher” sits inside “deciphered”. Our composite confusion score for this pair is 69457, derived from the frequency rank of both members and their visual similarity.

decipher is recorded at frequency rank #24,138, classified as averb, pronounced /dɪˈsaɪfə(ɹ)/. deciphered is at rank #45,319, tagged as averb.

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 69457, this pair ranks #54,485 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of decipher vs deciphered

Shared letters: cdehipr. Private to "decipher": -. Private to "deciphered": -.

"decipher" · 8 letters · shape CVCVCCVC  ·  "deciphered" · 10 letters · shape CVCVCCVCVC

Known mistypes of this pair

  • decipherdceipher · ddecipher · deccipher · decihper · decipehr · decipherr · deciphher · deciphre
  • deciphereddceiphered · ddeciphered · decciphered · decihpered · decipehred · decipheerd · decipherde · decipheredd

Frequently Asked Questions

Is swapping "decipher" for "deciphered" ever safe?
No. They differ by 2 extra letter(s) - “decipher” sits inside “deciphered”, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
In ordinary English text, does "decipher" or "deciphered" show up more?
"decipher" is the more common of the two: it sits at frequency rank #24,138 in our English list, against #45,319 for "deciphered". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "decipher" vs "deciphered" is on the table, pick a follow-up below.

  • Full dictionary entry for "decipher" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "deciphered" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #54,485 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "decipher" and "deciphered" also get mixed up with nearby pairs, the highest-scored neighbour is "decider vs decipher". 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 #54,485 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