zi vs zum, What's the Difference?

Which to use

“zi” is an adjective and “zum” is a preposition - they look or sound alike but fill different roles in a sentence.

#33,522
“zi” frequency rank: #39,603
“zum” frequency rank: 73125
confusion score

Side-by-Side Comparison

Feature	zi	zum
Definition	Noir.	Contraction de zu dem, donnant souvent : au (à le), à la, à l’.

Letter map: zi vs zum

Shared letters muted; letters that set zi and zum apart highlighted. Shared run: 1. zi runs 2 letters (CV) against zum's 3 (CVC) - the length gap alone is often enough to separate them once you know to check it.

2 ch

3 ch

zum

Role in the sentence - zi and zum

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: zi is anadjective and zumapreposition. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 73125, derived from the frequency rank of both members and their visual similarity.

zi is recorded at frequency rank #33,522, classified as anadj. zum is at rank #39,603, tagged as aprep, pronounced \t͡sʊm\.

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 73125, this pair ranks #41,537 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of zi vs zum

Shared letters: z. Private to "zi": i. Private to "zum": mu.

"zi" · 2 letters · shape CV · "zum" · 3 letters · shape CVC

Frequently Asked Questions

Do "zi" and "zum" mean the same thing in a sentence?

No - they are not even the same part of speech. "zi" is an adjective and "zum" a preposition, so a sentence built for one is usually ungrammatical with the other.

In ordinary French text, does "zi" or "zum" show up more?

"zi" is the more common of the two: it sits at frequency rank #33,522 in our French list, against #39,603 for "zum". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "zi" and "zum".

Full dictionary entry for "zi" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "zum" - compare definitions side by side with the headword page. Word entry
This pair ranks #41,537 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"zi" and "zum" also get mixed up with nearby pairs, the highest-scored neighbour is "zap vs zum". Nearby pair

Confusion rank #41,537 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.