shiftvsshimTell them apart

Which to use

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

#2,644
“shift” frequency rank
#40,020
“shim” frequency rank
42664
confusion score

Side-by-Side Comparison

Feature shift shim
Definition A movement to do something, a beginning. A wedge.

Where the eye mixes shift and shim

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

5 ch
shift
4 ch
shim

Why the eye confuses shift with shim

A purely visual mix-up. shift (/ʃɪft/) and shim (/ʃɪm/) 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 42664, derived from the frequency rank of both members and their visual similarity.

shift is recorded at frequency rank #2,644, classified as anoun, pronounced /ʃɪft/. shim is at rank #40,020, tagged as anoun, pronounced /ʃɪm/.

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 42664, this pair ranks #247,200 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of shift vs shim

Shared letters: his. Private to "shift": ft. Private to "shim": m.

"shift" · 5 letters · shape CCVCC  ·  "shim" · 4 letters · shape CCVC

Known mistypes of this pair

  • shifthsift · shfit · shhift · shifft · shiftt · shitf · sihft · sshift
  • shimhsim · shhim · shimm · shmi · sihm · sshim

Frequently Asked Questions

Can "shift" and "shim" be used interchangeably?
No. They are said differently (/ʃɪft/ versus /ʃɪm/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "shift" or "shim"?
"shift" is the more common of the two: it sits at frequency rank #2,644 in our English list, against #40,020 for "shim". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "shift" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "shim" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #247,200 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "shift" and "shim" also get mixed up with nearby pairs, the highest-scored neighbour is "shim vs Sif". 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 #247,200 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