syöpiin
Syöpiin is the illative plural form of the Finnish noun syöpä, meaning cancer. In Finnish, the illative case marks direction toward something, so syöpiin can be understood roughly as “into cancers” or “to cancers.” This form is encountered primarily in technical or linguistic discussions about Finnish grammar or in medical texts when a discussion explicitly concerns multiple cancer sites or types in a directional sense. In everyday language, the illative plural syöpiin is uncommon; speakers more often use the singular illative syöpään or other phrasing to avoid a literal sense of movement into cancers.
The usual Finnish terms for cancers themselves are syöpä (singular) and syövät (plural). The illative plural
In practice, syöpiin is mainly of interest to students of Finnish grammar, linguists, or writers handling precise