pacovspactsWhich spelling fits?

Which to use

“paco” and “pacts” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#29,409
“paco” frequency rank
#46,675
“pacts” frequency rank
76084
confusion score

Side-by-Side Comparison

Feature paco pacts
Definition An alpaca. plural of pact

Where the eye mixes paco and pacts

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. paco runs 4 letters (CVCV) against pacts's 5 (CVCCC) - the length gap alone is often enough to separate them once you know to check it.

4 ch
paco
5 ch
pacts

Why the eye confuses paco with pacts

A purely visual mix-up. paco (/ˈpɑːkəʊ/) and pacts (/pækts/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 76084, derived from the frequency rank of both members and their visual similarity.

paco is recorded at frequency rank #29,409, classified as anoun, pronounced /ˈpɑːkəʊ/. pacts is at rank #46,675, tagged as anoun, pronounced /pækts/.

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 76084, this pair ranks #31,118 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of paco vs pacts

Shared letters: acp. Private to "paco": o. Private to "pacts": st.

"paco" · 4 letters · shape CVCV  ·  "pacts" · 5 letters · shape CVCCC

Known mistypes of this pair

  • paco ← apco · pacco · paoc · pcao · ppaco
  • pacts ← apcts · paccts · pacst · pactss · pactts · patcs · pcats · ppacts

Frequently Asked Questions

Is swapping "paco" for "pacts" ever safe?
No. They are said differently (/ˈpɑːkəʊ/ versus /pækts/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "paco" or "pacts"?
"paco" is the more common of the two: it sits at frequency rank #29,409 in our English list, against #46,675 for "pacts". 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 "paco" and "pacts" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "paco" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "pacts" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #31,118 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "paco" and "pacts" also get mixed up with nearby pairs, the highest-scored neighbour is "pacts vs pecs". 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 #31,118 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list