sixvssulConfusable pair

Which to use

“six” and “sul” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#20,832
“six” frequency rank
#20,840
“sul” frequency rank
41672
confusion score

Side-by-Side Comparison

Feature six sul
Definition Palabra clave radiofónica del ICAO y NATO para la cifra 6. Sur.

Where the eye mixes six and sul

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
six
3 ch
sul

Visual trap between six and sul

A purely visual mix-up. six ([ˈsɪks]) and sul (/ˈsul/) 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 41672, derived from the frequency rank of both members and their visual similarity.

six is recorded at frequency rank #20,832, classified as anoun, pronounced [ˈsɪks]. sul is at rank #20,840, tagged as anoun, pronounced /ˈsul/.

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 41672, this pair ranks #152,366 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of six vs sul

Shared letters: s. Private to "six": ix. Private to "sul": lu.

"six" · 3 letters · shape CVC  ·  "sul" · 3 letters · shape CVC

Frequently Asked Questions

Can "six" and "sul" be used interchangeably?
No. They are said differently ([ˈsɪks] versus /ˈsul/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "six" vs "sul" - which ranks higher?
"six" is the more common of the two: it sits at frequency rank #20,832 in our Spanish list, against #20,840 for "sul". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "six" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sul" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #152,366 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "six" and "sul" also get mixed up with nearby pairs, the highest-scored neighbour is "sila vs sul". Nearby pair

Confusion rank #152,366 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