🇫🇮 The best dictionaries for learning Finnish

Published by the Institute for the Languages of Finland, this is the authority on what a Finnish word means and how it inflects, with the inflection-class number on every headword — which is exactly the information you need to decline anything correctly. Switching to it from bilingual dictionaries is a milestone worth aiming for. Finnish-only definitions make it impractical much below B1.

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.

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.