spunvssynWhich spelling fits?

Quick tell: spun is a verb, syn is an adjective, so they fill different roles in a sentence.

Which to use

“spun” is a verb and “syn” is an adjective - they look or sound alike but fill different roles in a sentence.

#11,799
“spun” frequency rank
#28,044
“syn” frequency rank
39843
confusion score

Side-by-Side Comparison

Feature spun syn
Definition simple past and past participle of spin That has a torsion angle between 0° and 90°.

Letter map: spun vs syn

Shared letters muted; letters that set spun and syn apart highlighted. Shared run: 2.

4 ch
spun
3 ch
syn

Part-of-speech tell for spun / syn

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: spun is averb and synanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 39843, derived from the frequency rank of both members and their visual similarity.

spun is recorded at frequency rank #11,799, classified as averb, pronounced /spʌn/. syn is at rank #28,044, tagged as anadj.

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 39843, this pair ranks #273,001 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of spun vs syn

Shared letters: ns. Private to "spun": pu. Private to "syn": y.

"spun" · 4 letters · shape CCVC  ·  "syn" · 3 letters · shape CVC

Known mistypes of this pair

  • spunpsun · spnu · sppun · spunn · sspun · supn

Frequently Asked Questions

Can "spun" and "syn" be used interchangeably?
No - they are not even the same part of speech. "spun" is a verb and "syn" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "spun" or "syn"?
"spun" is the more common of the two: it sits at frequency rank #11,799 in our English list, against #28,044 for "syn". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "spun" and "syn".

  • Full dictionary entry for "spun" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "syn" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #273,001 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "spun" and "syn" also get mixed up with nearby pairs, the highest-scored neighbour is "Sif vs syn". 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 #273,001 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