A huge slice of everyday Ukrainian verbs end in -ся (or its variant -сь): умива́тися "to wash up," смія́тися "to laugh," зустріча́тися "to meet," подо́батися "to please/be liked." English speakers reasonably assume this means "oneself" — and sometimes it does. But -ся is far bigger than the reflexive idea. It is a single fused postfix that marks reflexives, reciprocals, passives, and a whole crowd of plain intransitive verbs that English would never dream of marking. This page shows how the form attaches, walks through the five meaning families of -ся, and gives you the one mental adjustment that makes the whole system click.
What -ся is — and what makes it un-English
In French you write se laver with the pronoun se standing as a separate word before the verb. In Ukrainian there is no separate pronoun: -ся is glued onto the end of the verb, after everything else, and is never written apart. It does not move, it does not change for person, and (in standard Ukrainian) it does not jump around the sentence the way a French or Spanish clitic can.
Я щора́нку вмива́юся холо́дною водо́ю.
I wash my face every morning with cold water. (вмива́-ю + ся — the postfix sits after the 1sg ending.)
Не бі́йся, все бу́де до́бре.
Don't be afraid, everything will be fine. (бі́й + ся — -ся even rides on the imperative.)
The form: ми́тися "to wash (oneself)"
The base verb ми́ти "to wash (something)" becomes ми́тися "to wash oneself" simply by adding -ся. Conjugate the verb exactly as you normally would, then bolt -ся onto the end of every form.
| Person | Present | English |
|---|---|---|
| я | ми́юся | I wash (myself) |
| ти | ми́єшся | you wash |
| він / вона́ | ми́ється | he / she washes |
| ми | ми́ємося | we wash |
| ви | ми́єтеся | you (pl.) wash |
| вони́ | ми́ються | they wash |
The past tense works the same way — take the gendered past form and add -ся: він ми́вся, вона́ ми́лася, воно́ ми́лося, вони́ ми́лися. The postfix never reflects gender or number itself; the verb in front of it does all the agreeing.
Він до́вго ми́вся, бо прийшо́в уве́сь у багню́ці.
He washed for a long time because he came in all covered in mud. (ми́в + ся — masculine past plus the invariant -ся.)
Ді́ти вже одягли́ся й чека́ють біля две́рей.
The kids have already got dressed and are waiting by the door. (одягли́ + ся — plural past.)
-ся vs -сь: which to use
There is a second shape, -сь, but the rules are simple and the stakes are low:
- -ся is the everyday standard form and is always correct. When in doubt, use -ся.
- -сь is a lighter, colloquial/poetic variant that appears after a vowel, to avoid two consonant-clusters in a row: умива́юсь, смію́сь, не бі́йсь. You will hear it constantly in speech and read it in poetry, but it is optional — умива́юся is never wrong.
Я смію́ся, бо це і спра́вді смішно́.
I'm laughing because it really is funny. (смію́ся — full -ся; смію́сь in casual speech.)
Сподіва́юсь, ми ще поба́чимося.
I hope we'll see each other again. (Сподіва́юсь — colloquial -сь after the vowel; поба́чимося — full -ся.)
The five meaning families
Here is the heart of the matter. The same postfix -ся does five very different jobs. You do not pick the meaning — it is baked into the particular verb. Below is the map; each family gets a full treatment, with contrasting examples, on the many meanings of -ся.
| Family | Sense | Example |
|---|---|---|
| subject acts on itself ('oneself') | ми́тися, одяга́тися, голи́тися |
| two+ subjects act on each other | зустріча́тися, цілува́тися, обніма́тися |
| process happens, no named agent | буди́нок буду́ється, две́рі відчиня́ються |
| just an intransitive verb (English doesn't mark it) | смія́тися, боя́тися, усміха́тися, подо́батися |
| no non-ся form exists at all | пиша́тися, сподіва́тися, стара́тися |
1. True reflexive — the subject does something to itself. Here -ся really does mean "oneself," and you could (clumsily) paraphrase it with the pronoun себе́.
Він голи́ться щодня́, бо так заве́дено на робо́ті.
He shaves every day because that's the custom at work. (голи́ться — he shaves himself.)
2. Reciprocal — two or more people do the action to one another. English uses "each other."
Ми зустріча́ємося біля метро́ о сьо́мій.
We're meeting by the metro at seven. (зустріча́ємося — meeting each other; also the standard word for 'dating'.)
3. Passive / middle — the subject undergoes a process, and no agent is named. English often uses an intransitive verb ("the door opens") or a passive ("is being built").
На на́шій ву́лиці буду́ється нови́й буди́нок.
A new building is going up on our street. (буду́ється — is being built; no builder is mentioned.)
4. Inherent intransitive — this is the family that surprises everyone. These are ordinary intransitive verbs that simply happen to carry -ся, for historical reasons. There is nothing reflexive about laughing, fearing, or being pleasing — yet all three take -ся.
Я бою́ся висоти́, тому́ на дах не пі́ду.
I'm afraid of heights, so I won't go up to the roof. (бою́ся — 'fear', an intransitive that simply requires -ся.)
Мені́ ду́же подо́бається ця пі́сня.
I really like this song. (подо́бається — literally 'is pleasing to me'; the everyday way to say 'I like'. See its dedicated page.)
5. -ся-only verbs — these have no non-ся twin at all. пиша́ти, сподіва́ти, *стара́ти simply do not exist. The verb is born with -ся.
Ба́тько пиша́ється тобо́ю — він усі́м розповіда́є про твою́ перемо́гу.
Dad is proud of you — he tells everyone about your win. (пиша́тися has no non-ся form.)
For full coverage of подо́батися — the single most useful -ся verb a beginner meets — see its own page; it works backwards from English ("I like X" = "X is pleasing to me").
Why this matters: -ся is not optional decoration
The practical upshot is that you cannot reason your way to which verbs take -ся from the English meaning. "To laugh" carries no reflexive idea in English, yet смія́тися must have -ся; drop it and смія́ти is not a word. Conversely, ми́ти ("to wash something") and ми́тися ("to wash oneself") are both real, and the -ся flips an otherwise transitive verb to act on its own subject. So the rule is blunt and honest: learn each verb together with its -ся, the way you learn its aspect. There is no shortcut here — but the five families above tell you what the -ся is doing once you know it's there, which is more than half the battle.
Note also that adding -ся can change a verb's meaning outright — вчи́ти "to teach" becomes вчи́тися "to learn/study," знахо́дити "to find" becomes знахо́дитися "to be located." Those meaning-flipping pairs, and the case quirks that come with -ся verbs (боя́тися takes the genitive, not the accusative), are detailed on reflexive verb government.
Source-language comparison
For an English speaker, the trap is thinking -ся = "myself/yourself." It does for family 1, but families 2–5 cover ground English handles with completely different words: "each other," plain intransitives ("the door opens," "I laugh"), and verbs that simply have no reflexive flavour at all ("be afraid," "hope," "be proud," "like"). Treat -ся as a label that says "this verb is intransitive and turned inward," not as a translation of "oneself."
For a Russian speaker, three adjustments: (1) the standard form is -ся everywhere, with -сь only as an optional colloquial reduction after vowels — don't apply Russian's strict positional split; (2) Ukrainian writes -шся in the 2sg (ми́єшся), where Russian has -шься; (3) the postfix is fused after the personal ending exactly as in Russian, so that part transfers, but spell it the Ukrainian way (-ся, -сь, never -ся/-сь with the Russian soft sign placement).
Common Mistakes
❌ Я ся вмива́ю щора́нку. (detaching -ся and placing it before the verb)
Incorrect — Ukrainian -ся never separates and never precedes: Я вмива́юся щора́нку.
✅ Я вмива́юся щора́нку.
I wash up every morning — -ся fused onto the end.
❌ Він смі́є на уро́ці. (dropping -ся from a -ся-only verb)
Incorrect — *смі́яти does not exist; the verb is смія́тися: Він сміє́ться на уро́ці.
✅ Він сміє́ться на уро́ці.
He's laughing in class — смія́тися requires -ся.
❌ Ми ми́ємося ру́ки пе́ред обі́дом. (reflexive -ся with an explicit object 'hands')
Mixed — if you name what's washed, use the plain transitive: Ми ми́ємо ру́ки пе́ред обі́дом.
✅ Ми ми́ємо ру́ки пе́ред обі́дом.
We wash our hands before lunch — transitive ми́ти with the object ру́ки.
❌ Вона́ ми́лся вра́нці. (wrong past — masculine -ся on a feminine subject)
Incorrect — the verb agrees, the -ся doesn't: Вона́ ми́лася вра́нці.
✅ Вона́ ми́лася вра́нці.
She washed in the morning — feminine ми́лася + invariant -ся.
Key Takeaways
- -ся is one fused postfix, always written attached, sitting after the personal ending (ми́юся, ми́єшся, ми́ється).
- It conjugates by changing the verb, not the -ся: past він ми́вся, вона́ ми́лася, вони́ ми́лися.
- -сь is an optional colloquial/poetic variant after a vowel (умива́юсь); -ся is always safe.
- It covers five meaning families: reflexive (ми́тися), reciprocal (зустріча́тися), passive/middle (буду́ється), inherent intransitive (смія́тися, боя́тися, подо́батися), and -ся-only verbs (пиша́тися, сподіва́тися).
- You cannot predict -ся from English meaning — learn each verb with its -ся, just as you learn its aspect.
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- The Many Meanings of -сяB1 — A deep dive into what -ся actually does. Five jobs: REFLEXIVE (Він ми́ється 'washes himself'), RECIPROCAL (Вони́ сва́ряться 'they quarrel'), PASSIVE/MIDDLE (Кни́га легко́ чита́ється 'the book reads easily', Як це пи́шеться? 'how is this spelled?'), INHERENT (смія́тися, боя́тися+gen, надія́тися), and MEANING-CHANGING pairs where -ся flips the sense entirely: вчи́ти 'teach' → вчи́тися 'learn', знахо́дити 'find' → знахо́дитися 'be located', розхо́дитися 'disperse'. The big lesson: -ся is a multifunctional derivational tool, not just 'oneself' — so a verb's with-/without-ся forms must be learned as two different verbs, some take the genitive, and the passive -ся needs no agent.
- The Passive Voice in UkrainianB2 — Ukrainian has NO all-purpose 'be + past participle' passive. It expresses the passive by three native routes: (1) the invariant -но/-то impersonal for completed past actions (Кни́гу напи́сано, Мі́сто засно́вано) — the idiomatic default; (2) the -ся reflexive passive for ongoing imperfective processes (Буди́нок буду́ється, Хліб пече́ться); (3) бути + passive participle (Кни́га напи́сана / була́ напи́сана), which leans toward a resultant STATE and sounds bookish as a true passive. The named agent, when present, takes the INSTRUMENTAL (рома́н напи́саний письме́нником), never a 'by'-preposition. Above all, Ukrainian prefers ACTIVE recasting — translating an English passive usually means choosing a Ukrainian-native route, not calquing be+participle.
- Government of Reflexive (-ся) VerbsB2 — Reflexive -ся verbs carry their own fixed case government that almost never matches the English preposition: боя́тися and дотри́муватися take the genitive, цікавитися and користуватися the instrumental, дивува́тися the dative, while сподіва́тися takes на + accusative and одружи́тися з + instrumental — so each -ся verb's case must be memorised as a chunk.
- Подобатися (to be pleasing / to like)A2 — Complete conjugation-and-usage reference for подо́батися 'to be pleasing / to like' — the model EXPERIENCER-DATIVE verb where the liker goes in the dative (Мені́ подо́бається…) and the thing liked is the nominative subject that controls agreement (подо́бається ця кни́га, подо́баються ці кни́ги). Covers the imperfective present, the gendered past, both imperfective futures, the imperative, the perfective сподо́батися, and the contrast with люби́ти (accusative).
- The Reflexive Pronoun СебеA2 — Себе́ 'oneself' is one pronoun that covers myself, yourself, himself, ourselves, themselves — it takes its person from the subject of the clause. It has NO nominative (you can never be the subject of себе́), one set of forms for every person (себе́ in gen/acc, собі́ in dat/loc, собо́ю in instr), and it always points back to whoever is doing the verb: Я ба́чу себе́, Вона́ купи́ла собі́ су́кню, Візьми́ це з собо́ю. Keep it apart from the fused verbal -ся (ми́тися) — себе́ is a separate, stressed, full word used when 'oneself' is a real argument.
- Impersonal Verb ConstructionsB1 — Безособо́ві ре́чення — sentences with NO grammatical subject, which Ukrainian uses constantly. Six types: weather/nature (Світа́є, Похолода́ло, Сніжи́ть); states with a DATIVE experiencer (Мені́ хо́лодно, Йому́ пога́но, Хо́четься спа́ти); modal predicatives (Тре́ба йти, Мо́жна?, Не мо́жна, Слід поду́мати); the -но/-то passive (Зро́блено); existence/absence with нема́є + genitive (Гро́шей нема́є); and the agentless 3rd-plural 'they/people' (Ка́жуть, що...). The key insight: where English inserts a dummy 'it' or 'one/you', Ukrainian drops the subject entirely and makes the experiencer DATIVE — 'I'm cold' is Мені́ хо́лодно (literally 'to-me cold'), 'I feel like sleeping' is Мені́ хо́четься спа́ти.