Postpositions are an integral part of Finnish grammar. Unlike prepositions found in many other languages, postpositions in Finnish are placed after the noun they modify. They are used to express relationships or indicate location, direction, time, manner, and purpose.

Postpositions are a unique feature of Finnish, as they directly attach themselves to the noun they modify, without the need for any prepositions or articles. This makes Finnish sentence structures somewhat different and often more flexible than those of other languages.

An important aspect of understanding postpositions in Finnish is recognizing the different cases they can take. The use of postpositions affects the case that the noun takes, and this in turn impacts the overall structure and meaning of the sentence.

In summary, postpositions play a key role in Finnish grammar, enabling speakers to convey relationships, location, time, and other important details. Understanding the rules and usage of postpositions is essential for anyone learning to speak and write Finnish fluently.