LockevslockupWhat's the difference?

Quick tell: Locke is a name, lockup is a noun, so they fill different roles in a sentence.

Which to use

“Locke” is a name and “lockup” is a noun - they look or sound alike but fill different roles in a sentence.

#14,355
“Locke” frequency rank
#49,465
“lockup” frequency rank
63820
confusion score

Side-by-Side Comparison

Feature Locke lockup
Definition An English surname — famously held by A jail cell; a period of incarceration in such a cell; a facility containing such cells.

Letter map: Locke vs lockup

Shared letters muted; letters that set Locke and lockup apart highlighted. Shared run: 4. Locke runs 5 letters (CVCCV) against lockup's 6 (CVCCVC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
Locke
6 ch
lockup

Part-of-speech tell for Locke / lockup

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Locke is aname and lockupanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 63820, derived from the frequency rank of both members and their visual similarity.

Locke is recorded at frequency rank #14,355, classified as aname, pronounced /lɒk/. lockup is at rank #49,465, tagged as anoun.

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 63820, this pair ranks #80,907 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of Locke vs lockup

Shared letters: cklo. Private to "Locke": e. Private to "lockup": pu.

"Locke" · 5 letters · shape CVCCV  ·  "lockup" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • Locke ← lcoke · llocke · loccke · locek · lockke · lokce · olcke
  • lockup ← lcokup · llockup · locckup · lockkup · lockpu · lockupp · locukp · lokcup

Frequently Asked Questions

Is swapping "Locke" for "lockup" ever safe?
No - they are not even the same part of speech. "Locke" is a name and "lockup" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "Locke" vs "lockup" - which ranks higher?
"Locke" is the more common of the two: it sits at frequency rank #14,355 in our English list, against #49,465 for "lockup". 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 "Locke" and "lockup".

  • Full dictionary entry for "Locke" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "lockup" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #80,907 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Locke" and "lockup" also get mixed up with nearby pairs, the highest-scored neighbour is "lockup vs locum". 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 #80,907 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