primovsprimusConfusable pair

Quick tell: primo is a adjective, primus is a num, so they fill different roles in a sentence.

Which to use

“primo” is an adjective and “primus” is a num - they look or sound alike but fill different roles in a sentence.

#33,766
“primo” frequency rank
#25,711
“primus” frequency rank
59477
confusion score

Side-by-Side Comparison

Feature primo primus
Definition erste erster

Letter map: primo vs primus

Shared letters muted; letters that set primo and primus apart highlighted. Shared run: 4.

5 ch
primo
6 ch
primus

Grammar separator: primo vs primus

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: primo is anadjective and primusanum. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 59477, derived from the frequency rank of both members and their visual similarity.

primo is recorded at frequency rank #33,766, classified as anadj, pronounced […]. primus is at rank #25,711, tagged as anum, pronounced [ˈpriː.mus].

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 59477, this pair ranks #823,101 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of primo vs primus

Shared letters: impr. Private to "primo": o. Private to "primus": su.

"primo" · 5 letters · shape CCVCV  ·  "primus" · 6 letters · shape CCVCVC

Known mistypes of this pair

  • primopirmo · pprimo · primmo · priom · prmio · prrimo · rpimo
  • primuspirmus · pprimus · primmus · primsu · primuss · priums · prmius · prrimus

Frequently Asked Questions

Do "primo" and "primus" mean the same thing in a sentence?
No - they are not even the same part of speech. "primo" is an adjective and "primus" a num, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "primo" or "primus"?
"primus" is the more common of the two: it sits at frequency rank #25,711 in our German list, against #33,766 for "primo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pair "primo" vs "primus" is on the table, pick a follow-up below.

  • Full dictionary entry for "primo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "primus" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #823,101 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "primo" and "primus" also get mixed up with nearby pairs, the highest-scored neighbour is "primo vs puzzles". 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 #823,101 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list