We tracked down 6 of the best dictionaries for learning Polish, including 4 you can use for free. Our top picks right now are Słownik gramatyczny języka polskiego, Słownik języka polskiego PWN and Wielki słownik języka polskiego (WSJP). Every entry below is hand-checked and ordered free-first, so you can start without spending a cent.
6 resources · 4 free
Look up any Polish word and get every inflected form, free.
A grammatical dictionary that exists to answer one question completely: what are all the forms of this word. Given Polish's seven cases, three genders in the plural and unpredictable verb stems, having an authoritative full paradigm on demand saves enormous guesswork. No definitions and no translations — pair it with WSJP or a bilingual dictionary.
PWN's standard Polish dictionary plus the language-usage advice service.
The reference publisher's free portal bundles the main Polish dictionary with the official spelling and punctuation rules and the Poradnia Językowa, a free national service where linguists answer the public's questions about correct usage. It is the place Poles themselves check when they argue about a word. Definitions are in Polish only, and some content nudges you toward the paid subscription editions.
The most detailed free dictionary of Polish: meanings, collocations, inflection.
An academic dictionary of contemporary Polish from the Polish Academy of Sciences, giving each word its full inflection table, typical collocations, corpus examples and etymology — far more than a translation dictionary tells you. The collocation data is what stops you writing grammatically correct Polish that no Pole would say. Monolingual and dense, so it becomes useful somewhere around B1.
Free multilingual dictionary with etymologies, IPA and full conjugation tables.
Over 100 language editions; the English edition alone has millions of entries covering hundreds of languages, with IPA, declension and conjugation tables, etymologies and usage notes that commercial apps usually paywall. The etymology sections are quietly one of the best vocabulary-retention tools available. Being crowd-sourced, coverage is uneven and rare entries can be wrong — cross-check anything unusual against a native-language dictionary.
The bilingual dictionary Poles use, with audio and example sentences both ways.
Diki covers Polish against English and several other languages with recorded pronunciation, example sentences, collocations and picture vocabulary, and it handles the English-to-Polish direction far better than generic dictionary sites. For beginners it is the practical everyday lookup while WSJP is still out of reach. Ad-supported with a paid ad-free tier, and the interface defaults to Polish.
Crowd-sourced pronunciations of nearly any word by native speakers.
Around 6 million words recorded by native speakers across 400+ languages, usually with several accents per word so you can hear regional variation. Free to search on the site; the paid tiers are aimed at API users and bulk audio downloads. Indispensable for names, place names and anything a TTS voice would mangle — many learners wire it directly into Anki for card audio.