clackvsclamsWhich spelling fits?

Which to use

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

#46,381
“clack” frequency rank
#24,408
“clams” frequency rank
70789
confusion score

Side-by-Side Comparison

Feature clack clams
Definition An abrupt, sharp sound, especially one made by two hard objects colliding repetitively; a sound midway between a click and a clunk. plural of clam

Where the eye mixes clack and clams

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
clack
5 ch
clams

Visual trap between clack and clams

A purely visual mix-up. clack (/klæk/) and clams (/klæmz/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 70789, derived from the frequency rank of both members and their visual similarity.

clack is recorded at frequency rank #46,381, classified as anoun, pronounced /klæk/. clams is at rank #24,408, tagged as anoun, pronounced /klæmz/.

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 70789, this pair ranks #49,164 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of clack vs clams

Shared letters: acl. Private to "clack": k. Private to "clams": ms.

"clack" · 5 letters · shape CCVCC  ·  "clams" · 5 letters · shape CCVCC

Known mistypes of this pair

  • clackcalck · cclack · clacck · clackk · clakc · clcak · cllack · lcack
  • clamscalms · cclams · clamms · clamss · clasm · cllams · clmas · lcams

Frequently Asked Questions

Is swapping "clack" for "clams" ever safe?
No. They are said differently (/klæk/ versus /klæmz/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "clack" or "clams"?
"clams" is the more common of the two: it sits at frequency rank #24,408 in our English list, against #46,381 for "clack". 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 "clack" and "clams" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "clack" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "clams" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #49,164 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "clack" and "clams" also get mixed up with nearby pairs, the highest-scored neighbour is "clack vs clink". 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 #49,164 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