spacingvssyncingTell them apart

Which to use

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

#16,795
“spacing” frequency rank
#33,044
“syncing” frequency rank
49839
confusion score

Side-by-Side Comparison

Feature spacing syncing
Definition present participle and gerund of space present participle and gerund of sync

Where the eye mixes spacing and syncing

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

7 ch
spacing
7 ch
syncing

Why the eye confuses spacing with syncing

A purely visual mix-up. spacing (/ˈspeɪsɪŋ/) and syncing (/ˈsɪŋ.kɪŋ/) 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 49839, derived from the frequency rank of both members and their visual similarity.

spacing is recorded at frequency rank #16,795, classified as averb, pronounced /ˈspeɪsɪŋ/. syncing is at rank #33,044, tagged as averb, pronounced /ˈsɪŋ.kɪŋ/.

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 49839, this pair ranks #179,810 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of spacing vs syncing

Shared letters: cgins. Private to "spacing": ap. Private to "syncing": y.

"spacing" · 7 letters · shape CCVCVCC  ·  "syncing" · 7 letters · shape CVCCVCC

Known mistypes of this pair

  • spacingpsacing · sapcing · spaccing · spacign · spacingg · spacinng · spacnig · spaicng
  • syncingsnycing · ssyncing · sycning · synccing · syncign · syncingg · syncinng · syncnig

Frequently Asked Questions

Can "spacing" and "syncing" be used interchangeably?
No. They are said differently (/ˈspeɪsɪŋ/ versus /ˈsɪŋ.kɪŋ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "spacing" vs "syncing" - which ranks higher?
"spacing" is the more common of the two: it sits at frequency rank #16,795 in our English list, against #33,044 for "syncing". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "spacing" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "syncing" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #179,810 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "spacing" and "syncing" also get mixed up with nearby pairs, the highest-scored neighbour is "sinning vs syncing". 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 #179,810 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