efvsetWhich spelling fits?

Quick tell: ef is a noun, et is a conjunction, so they fill different roles in a sentence.

Which to use

“ef” is a noun and “et” is a conjunction - they look or sound alike but fill different roles in a sentence.

#29,619
“ef” frequency rank
#2,449
“et” frequency rank
32068
confusion score

Side-by-Side Comparison

Feature ef et
Definition Padre. Grafía alternativa de y.

Where the eye mixes ef and et

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

2 ch
ef
2 ch
et

Look-alike desk: ef vs et

These two trip readers on the page rather than in the ear: ef is [eɸ] while et is [ˈet̪]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - f in “ef” becomes t in “et”, and the parts of speech differ too (noun vs conjunction), which is usually the fastest check. Our composite confusion score for this pair is 32068, derived from the frequency rank of both members and their visual similarity.

ef is recorded at frequency rank #29,619, classified as anoun, pronounced [eɸ]. et is at rank #2,449, tagged as aconj, pronounced [ˈet̪].

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 32068, this pair ranks #203,911 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ef vs et

Shared letters: e. Private to "ef": f. Private to "et": t.

"ef" · 2 letters · shape VC  ·  "et" · 2 letters · shape VC

Frequently Asked Questions

Do "ef" and "et" mean the same thing in a sentence?
No - they are not even the same part of speech. "ef" is a noun and "et" a conjunction, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ef" or "et"?
"et" is the more common of the two: it sits at frequency rank #2,449 in our Spanish list, against #29,619 for "ef". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "ef" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "et" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #203,911 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "ef" and "et" also get mixed up with nearby pairs, the highest-scored neighbour is "ef vs EPL". Nearby pair

Confusion rank #203,911 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