mercivsmerlinTell them apart

Quick tell: merci is a intj, merlin is a noun, so they fill different roles in a sentence.

Which to use

“merci” is an intj and “merlin” is a noun - they look or sound alike but fill different roles in a sentence.

#38,047
“merci” frequency rank
#16,749
“merlin” frequency rank
54796
confusion score

Side-by-Side Comparison

Feature merci merlin
Definition Thank you. A small falcon, Falco columbarius, that breeds in northern North America, Europe, and Asia.

Where the eye mixes merci and merlin

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. merci runs 5 letters (CVCCV) against merlin's 6 (CVCCVC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
merci
6 ch
merlin

Visual trap between merci and merlin

These two trip readers on the page rather than in the ear: merci is /mɛːˈsiː/ while merlin is /ˈmɝlɪn/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (intj vs noun), which is usually the fastest check. Our composite confusion score for this pair is 54796, derived from the frequency rank of both members and their visual similarity.

merci is recorded at frequency rank #38,047, classified as anintj, pronounced /mɛːˈsiː/. merlin is at rank #16,749, tagged as anoun, pronounced /ˈmɝlɪn/.

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 54796, this pair ranks #138,413 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of merci vs merlin

Shared letters: eimr. Private to "merci": c. Private to "merlin": ln.

"merci" · 5 letters · shape CVCCV  ·  "merlin" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • merci ← emrci · mecri · mercci · meric · merrci · mmerci · mreci
  • merlin ← emrlin · melrin · meriln · merlinn · merllin · merlni · merrlin · mmerlin

Frequently Asked Questions

Can "merci" and "merlin" be used interchangeably?
No - they are not even the same part of speech. "merci" is an intj and "merlin" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "merci" or "merlin"?
"merlin" is the more common of the two: it sits at frequency rank #16,749 in our English list, against #38,047 for "merci". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "merci" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "merlin" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #138,413 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "merci" and "merlin" also get mixed up with nearby pairs, the highest-scored neighbour is "merci vs Merv". 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 #138,413 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