Z, zi, iz: one preposition, three shapes

The preposition is one; its shape follows what stands next to it, and the ear picks it so consonants never collide. A wrong shape changes nothing in meaning, but it grates at once. For example: “Він повернувся з роботи пізно” — He got back from work late. A rule from the Ukrainian course: worked out on examples, not memorized as a wording.

Updated September 1, 2026 · Lingofly

How it works

The preposition is one; its shape follows what stands next to it, and the ear picks it so consonants never collide. A wrong shape changes nothing in meaning, but it grates at once.

Z is the everyday form, before vowels and single consonants: z nulia, z domu, z roboty, z Ukrainy. Zi steps in before a pile of consonants, especially when the first one hisses: zi sliv, zi zla, zi shkoly, zi skhodu.

Iz appears when the word before ends in a consonant and the next one starts with one. So: buv iz bratom, khlib iz maslom, uziav iz zapasom.

The same flow rule runs through other little words. U and v: u misti, but v Odesi. I and y: brat i sestra, but sestra y brat. Ukrainian dodges two consonants or two vowels in a row wherever it can. The same reflex splits a and an in English.

Table

Z, zi, iz: one preposition, three shapes
shapewhenexample
zbefore a vowel or one consonantz nulia, z domu
zibefore a consonant clusterzi sliv, zi shkoly
izbetween two consonantskhlib iz maslom

By example

  • Він повернувся з роботи пізно
    He got back from work late
  • Зі слів сусіда, світло вимкнули вранці
    According to the neighbor, the lights went off in the morning
  • Візьми грошей із запасом
    Take some spare cash with you

How the rule settles in your head

A rule is not memorized from an explanation. It is memorized from an attempt to use it and a mistake — that is why the app delivers it mixed in with words, not as a separate lesson: it resurfaces exactly where you forgot it.

Frequently asked

Z, zi or iz: picking the right shape?

The preposition is one; its shape follows what stands next to it, and the ear picks it so consonants never collide. A wrong shape changes nothing in meaning, but it grates at once.

What does it look like in an example sentence Ukrainian?

“Він повернувся з роботи пізно” — He got back from work late. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.

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Test the rule on examplesPractice