The article comprises a study of a developed polysemy of the markers of two spatial cases, ablative (main allomorph -lt) and elative (main allomorph -st). Apart from the central meaning (source of movement—with orientations ‘at’ / (‘near’) and ‘in’ / ‘at’ respectively), each of these two markers is able to express a wide and diverse range of peripheral meanings that no longer provide any single invariant meaning. Examples of the most sematically “isolated” meanings discussed in the article are detected property (He looks happy), theme (I write about people), subject of evaluation (To my [mind], it was…). On the other hand, some groups of meanings semantically adjacent and connected to the central ones (in one way or another) can surely be found, too. This description may have made a certain contribution to the study of Finnish and other Baltic Finnic languages. The analysis of some meanings—such as secondary object of trade exchange (…paid five roubles for the pencil, …bought the pencil for five roubles) or “captative” (I carry the bag by the handles)—may be of interest from typological point of view also.