decayingvsdecodingConfusable pair

Quick tell: decaying is a verb, decoding is a noun, so they fill different roles in a sentence.

Which to use

“decaying” is a verb and “decoding” is a noun - they look or sound alike but fill different roles in a sentence.

#24,137
“decaying” frequency rank
#27,114
“decoding” frequency rank
51251
confusion score

Side-by-Side Comparison

Feature decaying decoding
Definition present participle and gerund of decay An instance of the translation of something (usually a message or other text) into a form more suitable for subsequent processing.

Letter map: decaying vs decoding

Shared letters muted; letters that set decaying and decoding apart highlighted. Shared run: 6.

8 ch
decaying
8 ch
decoding

Role in the sentence - decaying and decoding

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: decaying is averb and decodinganoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 51251, derived from the frequency rank of both members and their visual similarity.

decaying is recorded at frequency rank #24,137, classified as averb. decoding is at rank #27,114, tagged as anoun, pronounced /dɪˈkəʊdɪŋ(ɡ)/.

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 51251, this pair ranks #167,046 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of decaying vs decoding

Shared letters: cdegin. Private to "decaying": ay. Private to "decoding": o.

"decaying" · 8 letters · shape CVCVVVCC  ·  "decoding" · 8 letters · shape CVCVCVCC

Known mistypes of this pair

  • decayingdceaying · ddecaying · deacying · decaiyng · decayign · decayingg · decayinng · decaynig
  • decodingdceoding · ddecoding · deccoding · decdoing · decodding · decodign · decodingg · decodinng

Frequently Asked Questions

Is swapping "decaying" for "decoding" ever safe?
No - they are not even the same part of speech. "decaying" is a verb and "decoding" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "decaying" or "decoding" show up more?
"decaying" is the more common of the two: it sits at frequency rank #24,137 in our English list, against #27,114 for "decoding". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "decaying" vs "decoding" is on the table, pick a follow-up below.

  • Full dictionary entry for "decaying" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "decoding" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #167,046 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "decaying" and "decoding" also get mixed up with nearby pairs, the highest-scored neighbour is "decking vs decoding". 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 #167,046 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