English has a tidy phrase for mutual action: each other / one another. "They love each other," "they help one another." Polish has no such dedicated word in most cases. Instead it reuses the reflexive machinery — the particle się and the pronoun siebie / sobie — to express reciprocity. The same forms that mean "themselves" also mean "each other," and the difference is usually settled by context. On top of that sits one genuinely lexical reciprocal: the adverb nawzajem (and its twin wzajemnie), which is mostly used as the conversational reply "likewise / same to you."
Method 1: reciprocal się
The clitic się attached to a plural-subject verb very often means "each other." This is its reciprocal use, distinct from its true-reflexive use ("oneself").
Kochają się od liceum — to piękna historia.
They've loved each other since high school — it's a beautiful story.
Spotkaliśmy się przypadkiem na lotnisku w Madrycie.
We ran into each other by chance at the airport in Madrid.
Znamy się od dziecka.
We've known each other since childhood.
Kochają się = "they love each other"; znamy się = "we know each other"; spotkać się = "to meet (each other)." With these verbs the reciprocal reading is the natural one — nobody loves or meets themselves in the ordinary sense, so context picks reciprocity automatically. The mutual reading and the reflexive overlap is covered more fully on the reflexive true-and-reciprocal page.
Method 2: the reflexive pronoun siebie / sobie / sobą
When the mutual relation needs a case other than accusative, or sits after a preposition, Polish uses the full reflexive pronoun — siebie (gen/acc), sobie (dat/loc), sobą (instr) — for "each other" too. The same pronoun, the same forms as the reflexive.
Pomagają sobie nawzajem w trudnych chwilach.
They help each other in hard times.
Patrzyli na siebie bez słowa.
They looked at each other without a word.
Piszą do siebie codziennie, mimo że mieszkają osobno.
They write to each other every day, even though they live apart.
Note how the case is governed by the verb or preposition, exactly as it would be for any object: pomagać takes dative → sobie; patrzeć na takes accusative → na siebie; pisać do takes genitive → do siebie. There is no special "each other" pronoun — siebie is doing double duty.
Siedzieli obok siebie przez cały lot.
They sat next to each other for the whole flight.
na siebie (at each other), do siebie (to each other), o sobie (about each other), ze sobą (with each other). The preposition decides the form, not the meaning "each other."Reinforcing with nawzajem / wzajemnie
To make the reciprocity explicit — to stress mutually, that the action goes both ways — Polish adds the adverb nawzajem (or, slightly more formal, wzajemnie). It frequently pairs with the reflexive forms above.
Wspierają się nawzajem, cokolwiek się dzieje.
They support each other, no matter what happens.
Powinniśmy się wzajemnie szanować.
We ought to respect one another.
Here nawzajem / wzajemnie does not replace się — it reinforces it, removing any doubt that the action is mutual. On its own, though, nawzajem has a second life as a stand-alone reply.
Nawzajem! as "likewise / same to you"
By far the most common everyday use of nawzajem is as a one-word reply returning a good wish — the Polish equivalent of "you too / likewise / same to you." It appears constantly in greetings and well-wishing.
— Smacznego! — Dziękuję, nawzajem!
— Enjoy your meal! — Thanks, you too!
— Miłego weekendu! — Nawzajem!
— Have a nice weekend! — Likewise!
— Wesołych świąt! — Dziękuję, nawzajem, wszystkiego dobrego!
— Merry Christmas! — Thank you, same to you, all the best!
Wzajemnie! works identically as a reply and sounds a touch more formal/polished; nawzajem! is the everyday default. Note that you return good wishes with nawzajem, not literal statements — you would not answer "I live in Warsaw" with nawzajem. More such reply formulas live on the everyday courtesies page.
Disambiguating reciprocal from true reflexive
Because się and siebie do both jobs, some sentences are genuinely ambiguous. The classic case:
Myją się przed kolacją.
They wash (themselves) before dinner. — or, in context, they wash each other.
Myją się can mean "they wash themselves" (each person washes their own body — the default, most likely reading) or "they wash each other." Context almost always resolves it, but when you must be explicit, Polish has a dedicated disambiguator: jeden drugiego ("one another," literally "one the other"), which can only mean reciprocal.
Myją jeden drugiego, bo to małe dzieci i tak się bawią.
They wash one another, because they're little kids and that's how they play.
Obwiniali jeden drugiego o porażkę.
They blamed one another for the failure.
jeden drugiego only when you genuinely need to rule out the "themselves" reading — it sounds heavy in casual speech. With verbs like kochać się, spotkać się, znać się, the reciprocal meaning is already the default, so plain się is more natural.Jeden drugiego declines both halves to fit the verb's case (jeden drugiemu for dative, jeden o drugim after a preposition, and so on), and it forces the reciprocal reading where się alone would be ambiguous. It is the closest Polish comes to a dedicated "each other," but it is heavier and used only when clarity demands it.
Pomagali jeden drugiemu wnosić meble na trzecie piętro.
They helped one another carry the furniture up to the third floor.
Common Mistakes
❌ Kochają każdy inny.
Incorrect — a word-for-word 'each other' calque; Polish uses 'się'.
✅ Kochają się.
They love each other.
There is no *każdy inny / *jeden inny calque of "each other." The default reciprocal is się (or siebie), not a literal translation of the English phrase.
❌ Patrzą na się.
Incorrect — after a preposition you need the full pronoun 'siebie', not the clitic 'się'.
✅ Patrzą na siebie.
They look at each other.
The clitic się cannot stand after a preposition. Use the stressed form siebie there: na siebie, o sobie, do siebie.
❌ Pomagają się.
Incorrect — 'pomagać' governs the dative, so it needs 'sobie', not accusative 'się'.
✅ Pomagają sobie.
They help each other.
The reciprocal pronoun must take the case the verb requires. Pomagać is dative → sobie. Many learners default to się for every verb.
❌ — Miłego dnia! — Tobie też nawzajem!
Redundant/odd — 'nawzajem' already means 'you too'.
✅ — Miłego dnia! — Nawzajem!
— Have a nice day! — You too!
Nawzajem! already carries "you too / likewise" on its own. Stacking it with tobie też is redundant. A simple Nawzajem! (or Dziękuję, nawzajem!) is the natural reply.
Key Takeaways
- Polish expresses "each other" mainly through the reflexive forms: clitic
sięand the pronounsiebie / sobie / sobą. - The case of
siebieis set by the verb or preposition (pomagać sobie,patrzeć na siebie,pisać do siebie). Nawzajem/wzajemniereinforces reciprocity ("mutually") and, on its own, is the everyday reply "likewise / you too."- When
sięis ambiguous between "themselves" and "each other," usejeden drugiegoto force the reciprocal reading. - There is no single dedicated "each other" word in most contexts —
jeden drugiegois the nearest, used only for clarity.
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Start learning Polish→Related Topics
- Reflexive and Reciprocal sięB1 — The two literal uses of się — the subject acting on itself ('myself') and several subjects acting on each other ('each other') — and how się (accusative) differs from sobie (dative) and sam (emphatic).
- The Reflexive Pronoun: siebie, sobie, sobąB1 — siebie is the full reflexive pronoun — it declines (siebie / sobie / sobą), has no nominative, and refers back to the subject for any person; distinct from the clitic się.
- Turn-Taking, Fillers, and BackchannelsB2 — The colloquial words that run a Polish conversation — fillers (yyy, no, tego), backchannels (mhm, no właśnie), floor-holders (słuchaj, wiesz co) and closers (no dobra).
- Everyday Courtesies and Small TalkA1 — The fixed Polish politeness formulas — proszę, dziękuję, przepraszam and their replies, plus the well-wishing phrases English lacks single words for: Smacznego! before a meal, Na zdrowie! for a toast and after a sneeze, Powodzenia!, Wszystkiego najlepszego!, Miłego dnia! — and when each is socially expected.