tonttiin
Tonttiin is a grammatical form in Finnish. It is the illative singular form of the noun tontti, which means a plot of land or a lot. The illative case in Finnish marks movement into a place or toward the interior of a space, so tonttiin is used when describing actions directed into or toward the interior of a plot.
The base word tontti is borrowed from Swedish tomt, reflecting the concept of a defined parcel of
Notes on usage and forms: Finnish has several locative cases, and the illative form tonttiin provides a