Which to use
“sec” is a noun and “six” is a num - they look or sound alike but fill different roles in a sentence.
- #4,268
- “sec” frequency rank
- #519
- “six” frequency rank
- 4787
- confusion score
Side-by-Side Comparison
| Feature | sec | six |
|---|---|---|
| Definition | Second, ¹⁄₆₀ of a minute. | A numerical value equal to 6; the number following five and preceding seven. This number of dots: (••••••). |
Where the eye mixes sec and six
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Why the eye confuses sec with six
These two trip readers on the page rather than in the ear: sec is /sɛk/ while six is /sɪks/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs num), which is usually the fastest check. Our composite confusion score for this pair is 4787, derived from the frequency rank of both members and their visual similarity.
sec is recorded at frequency rank #4,268, classified as anoun, pronounced /sɛk/. six is at rank #519, tagged as anum, pronounced /sɪks/.
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 4787, this pair ranks #517,673 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sec vs six
Shared letters: s. Private to "sec": ce. Private to "six": ix.
"sec" · 3 letters · shape CVC · "six" · 3 letters · shape CVC
Frequently Asked Questions
Do "sec" and "six" mean the same thing in a sentence?
Frequency check: "sec" vs "six" - which ranks higher?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "sec" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "six" - compare definitions side by side with the headword page. Word entry
- This pair ranks #517,673 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sec" and "six" also get mixed up with nearby pairs, the highest-scored neighbour is "sec vs Sif". Nearby pair
Confusion rank #517,673 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.