sincevssingleWhich spelling fits?

Quick tell: since is a preposition, single is an adjective, so they fill different roles in a sentence.

Which to use

“since” is a preposition and “single” is an adjective - they look or sound alike but fill different roles in a sentence.

#31,121
“since” frequency rank
#10,761
“single” frequency rank
41882
confusion score

Side-by-Side Comparison

Feature since single
Definition Desde. Dícese de cualquier cabo que laborea sencillo, como la braza, el amantillo, etc. cuando uno de sus chicotes está hecho firme en el peñol de la verga.

Where the eye mixes since and single

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

5 ch
since
6 ch
single

Why the eye confuses since with single

These two trip readers on the page rather than in the ear: since is /sɪns/ while single is [ˈsĩŋgle]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (preposition vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 41882, derived from the frequency rank of both members and their visual similarity.

since is recorded at frequency rank #31,121, classified as aprep, pronounced /sɪns/. single is at rank #10,761, tagged as anadj, pronounced [ˈsĩŋgle].

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 41882, this pair ranks #151,270 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of since vs single

Shared letters: eins. Private to "since": c. Private to "single": gl.

"since" · 5 letters · shape CVCCV  ·  "single" · 6 letters · shape CVCCCV

Known mistypes of this pair

  • sincecince · isnce · sicne · sincce · sinec · sinnce · sinse · snice
  • singlecingle · isngle · signle · singel · singgle · singlle · sinlge · sinngle

Frequently Asked Questions

Can "since" and "single" be used interchangeably?
No - they are not even the same part of speech. "since" is a preposition and "single" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "since" or "single"?
"single" is the more common of the two: it sits at frequency rank #10,761 in our Spanish list, against #31,121 for "since". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "since" and "single" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "since" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "single" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #151,270 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "since" and "single" also get mixed up with nearby pairs, the highest-scored neighbour is "sica vs since". 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 #151,270 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list