Orodnik: the “with what” case and why it always carries z or s

The instrumental (orodnik) is the sixth and last case in Slovenian, and until this wave you barely met it. The time has come: without it you cannot say 'measured with a ruler', 'covered in dust', 'with room to spare', 'with the last of my strength'. For example: “Kruh je narezal z ostrim nožem” — He cut the bread with a sharp knife. A rule from the Slovenian course: worked out on examples, not memorized as a wording.

Updated September 1, 2026 · Lingofly

How it works

The instrumental (orodnik) is the sixth and last case in Slovenian, and until this wave you barely met it. The time has come: without it you cannot say 'measured with a ruler', 'covered in dust', 'with room to spare', 'with the last of my strength'.

The main thing relative to English. English builds the instrument with 'with' — 'I cut it with a knife'. Slovenian also uses a preposition, z or s: režem z nožem, merim z metrom, pišem s svinčnikom. Here English is the good anchor: the preposition is obligatory in both languages.

s stands before the voiceless consonants (s, š, k, p, t, č, f, h), z before everything else and before vowels. It is the same rule as the familiar iz / s pair: s prijateljem, but z bratom.

The endings. Masculine and neuter: -om (z nožem, z avtom, s prahom), -em after a soft consonant (s ključem). Feminine: -o (z roko, z vodo, s sestro). Plural for all: -i (z noži, z rokami, s prijatelji) — more precisely, feminine -ami, masculine and neuter -i. Dual: -oma (z rokama, z bratoma) — and this is the case where the dual is heard especially clearly.

Where else it is needed. After the prepositions z/s (with whom, with what), pred (in front of), za (behind, about place), nad (above), pod (under), med (between): pred hišo, nad mizo, med sosedoma. And after verbs like ukvarjati se z, postati (postal je zdravnik — nominative there, but postal je z leti bolj miren — instrumental of time).

Feminine nouns on a consonant (moč, laž, plast) take -jo in the instrumental: z močjo, z lažjo, s plastjo. From here z zadnjimi močmi — with the last of one's strength: the plural is močmi.

Table

Orodnik: the “with what” case and why it always carries z or s
gender and numberendingexamplethe English
m. sg.-om / -emz nožemwith a knife
f. sg.-oz vodowith water
f. on a consonant-joz močjowith force
n. sg.-omz oknomwith a window
dual-oma / -amaz rokamawith two hands
pl. m.-iz nožiwith knives
pl. f.-amiz rokamiwith hands
preposition before voicelessss prijateljemwith a friend

By example

  • Kruh je narezal z ostrim nožem
    He cut the bread with a sharp knife
  • Miza je bila pokrita s plastjo prahu
    The table was covered with a layer of dust
  • Z bratoma sva se pogovorila pred hišo
    I talked with the two brothers in front of the house

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

Orodnik: how does it work in Slovenian?

The instrumental (orodnik) is the sixth and last case in Slovenian, and until this wave you barely met it. The time has come: without it you cannot say 'measured with a ruler', 'covered in dust', 'with room to spare', 'with the last of my strength'.

What does it look like in an example sentence Slovenian?

“Kruh je narezal z ostrim nožem” — He cut the bread with a sharp knife. 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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