thanvsthenWhat's the difference?

Quick tell: than is a conjunction, then is an adverb, so they fill different roles in a sentence.

Which to use

“than” is a conjunction and “then” is an adverb - they look or sound alike but fill different roles in a sentence.

#19,584
“than” frequency rank
#25,065
“then” frequency rank
44649
confusion score

Side-by-Side Comparison

Feature than then
Definition Que, de lo que. Entonces.

Where the eye mixes than and then

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
than
4 ch
then

Why the eye confuses than with then

These two trip readers on the page rather than in the ear: than is /ðæn/ while then is /ðɛn/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - a in “than” becomes e in “then”, and the parts of speech differ too (conjunction vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 44649, derived from the frequency rank of both members and their visual similarity.

than is recorded at frequency rank #19,584, classified as aconj, pronounced /ðæn/. then is at rank #25,065, tagged as anadv, pronounced /ðɛn/.

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 44649, this pair ranks #135,893 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of than vs then

Shared letters: hnt. Private to "than": a. Private to "then": e.

"than" · 4 letters · shape CCVC  ·  "then" · 4 letters · shape CCVC

Known mistypes of this pair

  • thanhtan · tahn · thann · thhan · thna · tthan
  • thenhten · tehn · thenn · thhen · thne · tthen

Frequently Asked Questions

Is swapping "than" for "then" ever safe?
No - they are not even the same part of speech. "than" is a conjunction and "then" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "than" or "then"?
"than" is the more common of the two: it sits at frequency rank #19,584 in our Spanish list, against #25,065 for "then". 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 "than" and "then" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "than" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "then" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #135,893 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "than" and "then" also get mixed up with nearby pairs, the highest-scored neighbour is "tem vs then". 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 #135,893 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