decafvsDMCATell them apart

Quick tell: decaf is a adjective, DMCA is a name, so they fill different roles in a sentence.

Which to use

“decaf” is an adjective and “DMCA” is a name - they look or sound alike but fill different roles in a sentence.

#45,317
“decaf” frequency rank
#41,597
“DMCA” frequency rank
86914
confusion score

Side-by-Side Comparison

Feature decaf DMCA
Definition That has caffeine removed. Initialism of Digital Millennium Copyright Act.

Letter map: decaf vs DMCA

Shared letters muted; letters that set decaf and DMCA apart highlighted. Shared run: 3.

5 ch
decaf
4 ch
DMCA

Grammar separator: decaf vs DMCA

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: decaf is anadjective and DMCAaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 86914, derived from the frequency rank of both members and their visual similarity.

decaf is recorded at frequency rank #45,317, classified as anadj, pronounced /ˈdiːkæf/. DMCA is at rank #41,597, tagged as aname.

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 86914, this pair ranks #8,294 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of decaf vs DMCA

Shared letters: acd. Private to "decaf": ef. Private to "DMCA": m.

"decaf" · 5 letters · shape CVCVC  ·  "DMCA" · 4 letters · shape CCCV

Known mistypes of this pair

  • decafdceaf · ddecaf · deacf · decaff · deccaf · decfa · edcaf
  • DMCAdcma · ddmca · dmac · dmcca · dmmca · mdca

Frequently Asked Questions

Can "decaf" and "DMCA" be used interchangeably?
No - they are not even the same part of speech. "decaf" is an adjective and "DMCA" a name, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "decaf" or "DMCA" show up more?
"DMCA" is the more common of the two: it sits at frequency rank #41,597 in our English list, against #45,317 for "decaf". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "decaf" and "DMCA".

  • Full dictionary entry for "decaf" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "DMCA" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #8,294 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "decaf" and "DMCA" also get mixed up with nearby pairs, the highest-scored neighbour is "decaf vs Deccan". 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 #8,294 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