Kielitoimiston sanakirja
The definitive monolingual dictionary of standard Finnish, free from Kotus.
DictionariesFreeIntermediateAdvancedB1–C2
What it actually is
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.
What it covers
- Vocabulary
- Reading
- Writing