lockvsloxWhich spelling fits?

Which to use

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

#2,954
“lock” frequency rank
#44,312
“lox” frequency rank
47266
confusion score

Side-by-Side Comparison

Feature lock lox
Definition Something used for fastening, which can only be opened with a key or combination. Salmon that is cured in brine and then smoked at a low temperature so that the flesh remains uncooked.

Where the eye mixes lock and lox

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
lock
3 ch
lox

Why the eye confuses lock with lox

A purely visual mix-up. lock (/lɒk/) and lox (/lɒks/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 47266, derived from the frequency rank of both members and their visual similarity.

lock is recorded at frequency rank #2,954, classified as anoun, pronounced /lɒk/. lox is at rank #44,312, tagged as anoun, pronounced /lɒks/.

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 47266, this pair ranks #204,028 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of lock vs lox

Shared letters: lo. Private to "lock": ck. Private to "lox": x.

"lock" · 4 letters · shape CVCC  ·  "lox" · 3 letters · shape CVC

Known mistypes of this pair

  • locklcok · llock · locck · lockk · lokc · olck

Frequently Asked Questions

Is swapping "lock" for "lox" ever safe?
No. They are said differently (/lɒk/ versus /lɒks/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "lock" or "lox"?
"lock" is the more common of the two: it sits at frequency rank #2,954 in our English list, against #44,312 for "lox". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "lock" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "lox" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #204,028 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "lock" and "lox" also get mixed up with nearby pairs, the highest-scored neighbour is "lox vs LSC". 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 #204,028 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