Describing your week is the first thing you do in a new language, and in Croatian it pulls together three small pieces of grammar that English handles very differently. To say "on Monday" you use the preposition u followed by the accusative (u ponedjeljak), not a separate word like English "on". Routine verbs sit in the plain present tense (Croatian has no separate "I work / I am working" split). And how often you do something is carried by frequency adverbs — uvijek, obično, nikad — that slot into a fixed spot in the sentence. This annotated chat between two students in ti walks through a typical week.
The dialogue
— Maja: Bok, Luka! Imaš li vremena u srijedu? — Luka: U srijedu ne mogu. Srijedom uvijek imam trening. — Maja: A u četvrtak? — Luka: U četvrtak može. Obično ujutro idem na faks, ali popodne sam slobodan. — Maja: Super. Ja petkom nikad ne radim, pa možemo i u petak. — Luka: Dobro. Što obično radiš vikendom? — Maja: Subotom spavam do podne, a onda učim cijelo popodne. — Luka: Ha-ha, a nedjeljom? — Maja: Nedjeljom se odmaram. Idem na kavu i ništa ne radim. — Luka: Onda se vidimo u četvrtak popodne. Pošalji mi poruku. — Maja: Hoću. Vidimo se!
Grammar in action
Days of the week with u + accusative — u srijedu, u petak. To pin an event to a particular day, Croatian uses the preposition u ("in/on") followed by the accusative case: u ponedjeljak (on Monday), u srijedu (on Wednesday), u četvrtak (on Thursday), u petak (on Friday). There is no separate word for "on"; the whole job is done by u plus the case. Most day-names are masculine and look unchanged in the accusative (petak → u petak), but the feminine srijeda and subota shift their ending to -u (srijeda → u srijedu).
Bok, Luka! Imaš li vremena u srijedu?
Hi, Luka! Do you have time on Wednesday? — 'u srijedu' = u + accusative of feminine 'srijeda'; 'imaš li vremena' uses the partitive genitive 'vremena'.
U srijedu ne mogu.
On Wednesday I can't. — 'u srijedu' again; 'ne mogu' = I can't (negated present of 'moći').
The full list of day, month, and season names — and which gender each takes — is on days, months and seasons, and the rules for which preposition pairs with which time word are on temporal prepositions.
Recurring days — the bare instrumental: srijedom, petkom, vikendom. There is a second, very common way to talk about days, and English has nothing like it. To say something happens every Monday, regularly on Wednesdays, Croatian drops the preposition entirely and puts the day in the bare instrumental: ponedjeljkom (on Mondays / every Monday), srijedom (on Wednesdays), petkom (on Fridays), vikendom (on weekends). The contrast is sharp: u petak = this coming Friday (one specific day), but petkom = on Fridays in general (a habit).
Srijedom uvijek imam trening.
On Wednesdays I always have training. — bare instrumental 'srijedom' = habitually on Wednesdays; contrast with one-off 'u srijedu'.
Subotom spavam do podne, a onda učim cijelo popodne.
On Saturdays I sleep until noon, and then I study the whole afternoon. — habitual 'subotom'; 'do podne' = genitive after 'do'; 'cijelo popodne' = accusative of duration.
This habitual instrumental is one of the quiet workhorses of Croatian time expressions; see temporal prepositions for how it sits alongside the u + accusative pattern.
Present-tense routine verbs — radim, idem, učim. Croatian has a single present tense that covers both English "I work" and "I am working". When you describe a routine, you simply use that plain present: idem na faks (I go to college), radim (I work), učim (I study), spavam (I sleep), odmaram se (I rest). There is no auxiliary "do" and no continuous "-ing" form to choose; the same form serves a habit and a current action.
Obično ujutro idem na faks, ali popodne sam slobodan.
I usually go to college in the morning, but in the afternoon I'm free. — plain present 'idem' for a routine; 'ujutro' / 'popodne' = times of day; 'slobodan' = masculine 'free'.
Nedjeljom se odmaram. Idem na kavu i ništa ne radim.
On Sundays I rest. I go for a coffee and do nothing. — habitual present verbs; 'ništa ne radim' = double negation (lit. 'nothing I-don't-do').
The most common everyday verbs and their present-tense forms are on high-frequency verbs.
Frequency adverbs — uvijek, obično, nikad. How often you do something is carried by a frequency adverb: uvijek (always), obično (usually), često (often), ponekad (sometimes), rijetko (rarely), nikad (never). They usually sit right before the verb. Watch nikad: like every Croatian negative word, it forces the verb to be negated too — nikad ne radim (never do-not work), the obligatory double negative that English forbids.
Ja petkom nikad ne radim, pa možemo i u petak.
I never work on Fridays, so we can do Friday too. — frequency adverb 'nikad' + obligatory 'ne' on the verb; habitual 'petkom' vs one-off 'u petak'.
Što obično radiš vikendom?
What do you usually do on weekends? — frequency adverb 'obično' before the verb; habitual 'vikendom'.
Where each frequency adverb falls on the often-to-never scale, and where it sits in the clause, is on quantity and frequency adverbs.
Vocabulary
| Croatian | English | Note |
|---|---|---|
| ponedjeljak | Monday | masc.; 'u ponedjeljak' / 'ponedjeljkom' |
| srijeda | Wednesday | fem.; 'u srijedu' / 'srijedom' |
| četvrtak / petak | Thursday / Friday | masc.; 'u četvrtak', 'u petak' |
| vikend | weekend | 'vikendom' = on weekends |
| trening | training / workout | 'imam trening' = I have training |
| faks | college / uni | (informal) for 'fakultet' |
| obično | usually | frequency adverb |
| uvijek / nikad | always / never | 'nikad' needs 'ne' on the verb |
| ujutro / popodne | in the morning / afternoon | times of day |
| slobodan | free (available) | masc.; 'slobodna' fem. |
Culture & register note
Key Takeaways
- For one specific day, use u
- accusative: u ponedjeljak, u srijedu, u petak — no separate word for "on".
- For a recurring day, drop the preposition and use the bare instrumental: ponedjeljkom, srijedom, vikendom (= every Monday, on Wednesdays, on weekends).
- Routine actions take the plain present — one form covers both "I work" and "I am working": radim, idem, učim.
- Frequency adverbs (uvijek, obično, često, nikad) sit before the verb; nikad and other negatives force ne on the verb (double negation).
- Anchor the day with a time of day: ujutro (in the morning), popodne (in the afternoon), navečer (in the evening).
Now practice Croatian
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Start learning Croatian→Related Topics
- Days, Months, and SeasonsA1 — The week, Croatia's striking NATIVE month names (siječanj, not januar), and the seasons — plus the rule that splits 'on Monday' (u + accusative) from 'in May' (u + locative).
- Temporal PrepositionsB1 — Time prepositions and the cases they take — the u + accusative vs u + locative split, plus za, prije, nakon, do, od and during.
- Adverbs of Quantity and FrequencyA2 — puno/mnogo, malo, dosta + genitive; uvijek, često, rijetko, nikad — and the double surprise that quantity words take the genitive AND neuter-singular agreement.
- The First 20 Verbs to KnowA1 — A starter set of essential present-tense verbs.
- Dialogue: Asking and Telling the TimeA1 — An annotated dialogue on the clock — 'Koliko je sati?', time-of-day numerals like 'pola tri', 'u' + accusative for clock points ('u pet sati'), and the basic numbers behind them.