Iso suomen kielioppi (lit. "the large grammar of Finnish") is a reference book of Finnish grammar. It was published in 2004 by the Finnish Literature Society and to this date is the most extensive of its kind. It is a collaboration written by noted Finnish language scholars Auli Hakulinen, Maria Vilkuna, Riitta Korhonen, Vesa Koivisto, Tarja-Riitta Heinonen and Irja Alho.

Iso suomen kielioppi
Front cover of Iso suomen kielioppi
AuthorAuli Hakulinen, Maria Vilkuna, Riitta Korhonen, Vesa Koivisto, Tarja-Riitta Heinonen and Irja Alho
LanguageFinnish
GenreReference book
PublisherFinnish Literature Society
Publication date
2004
Publication placeFinland
Media typePrint (Hardcover)
ISBN951-746-557-2
OCLC57722711
LC ClassPH135 .I85 2004

The 1,698 page book differs from earlier grammars by taking a descriptive approach and describing colloquial Finnish in addition to standard literary Finnish.

The entire work is also freely available online.

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