aftervsalterWhat's the difference?

Quick tell: after is a conjunction, alter is a pronoun, so they fill different roles in a sentence.

Which to use

“after” is a conjunction and “alter” is a pronoun - they look or sound alike but fill different roles in a sentence.

#8,569
“after” frequency rank
#23,189
“alter” frequency rank
31758
confusion score

Side-by-Side Comparison

Feature after alter
Definition depois que outro (dentre dois)

Letter map: after vs alter

Shared letters muted; letters that set after and alter apart highlighted. Shared run: 4.

5 ch
after
5 ch
alter

Part-of-speech tell for after / alter

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: after is aconjunction and alterapronoun. On the page they differ by a single letter - f in “after” becomes l in “alter”. Our composite confusion score for this pair is 31758, derived from the frequency rank of both members and their visual similarity.

after is recorded at frequency rank #8,569, classified as aconj. alter is at rank #23,189, tagged as apron.

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 31758, this pair ranks #36,233 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of after vs alter

Shared letters: aert. Private to "after": f. Private to "alter": l.

"after" · 5 letters · shape VCCVC  ·  "alter" · 5 letters · shape VCCVC

Known mistypes of this pair

  • afterafetr · affter · afterr · aftre · aftter · atfer · fater
  • alteraletr · allter · alterr · altre · altter · atler

Frequently Asked Questions

Do "after" and "alter" mean the same thing in a sentence?
No - they are not even the same part of speech. "after" is a conjunction and "alter" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "after" vs "alter" - which ranks higher?
"after" is the more common of the two: it sits at frequency rank #8,569 in our Portuguese list, against #23,189 for "alter". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Done with this confusable. These links stay specific to "after" and "alter".

  • Full dictionary entry for "after" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "alter" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #36,233 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "after" and "alter" also get mixed up with nearby pairs, the highest-scored neighbour is "alles vs alter". 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 #36,233 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list