Which to use
“sic” is an adverb and “so” is a conjunction - they look or sound alike but fill different roles in a sentence.
- #12,684
- “sic” frequency rank
- #33
- “so” frequency rank
- 12717
- confusion score
Side-by-Side Comparison
| Feature | sic | so |
|---|---|---|
| Definition | Thus; as written; used to indicate, for example, that text is being quoted as it is from the source. | Reduced form of 'so that', used to express purpose; in order that. |
Where the eye mixes sic and so
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: sic vs so
These two trip readers on the page rather than in the ear: sic is /sɪk/ while so is /səʊ/. 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 (adverb vs conjunction), which is usually the fastest check. Our composite confusion score for this pair is 12717, derived from the frequency rank of both members and their visual similarity.
sic is recorded at frequency rank #12,684, classified as anadv, pronounced /sɪk/. so is at rank #33, tagged as aconj, pronounced /səʊ/.
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 12717, this pair ranks #479,935 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sic vs so
Shared letters: s. Private to "sic": ci. Private to "so": o.
"sic" · 3 letters · shape CVC · "so" · 2 letters · shape CV
Frequently Asked Questions
Can "sic" and "so" be used interchangeably?
Frequency check: "sic" vs "so" - which ranks higher?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "sic" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "so" - compare definitions side by side with the headword page. Word entry
- This pair ranks #479,935 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sic" and "so" also get mixed up with nearby pairs, the highest-scored neighbour is "sic vs Sif". Nearby pair
Confusion rank #479,935 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.