Lamppuun

Lamppuun is the illative singular form of the Finnish noun lamppu, meaning lamp or light fixture. The illative case expresses direction toward or into something, and lamppuun is used to indicate movement to the lamp or an action carried out at the lamp as a destination.

In practice, lamppuun is used with verbs of motion or action that involve reaching or entering the lamp. For example: Menen lamppuun vaihtamaan polttimoa, which translates to “I am going to the lamp to change the bulb.” This form contrasts with other cases of lamppu, such as the nominative lamppu (the lamp), the partitive lamppua, or the genitive lamppun, showing how Finnish marks direction and location through suffixes.

Lamppu is a common everyday noun, referring to a device that emits light, whether a ceiling fixture or a standalone lamp, and it can also be used for a light bulb in informal speech. The illative plural form is lamppuihin, used when referring to multiple lamps into which one moves or inserts something.

Summary: lamppuun is the illative form used to denote movement toward or insertion into a lamp. It exemplifies Finnish case-driven grammar, where suffixes attach to stems to signal location and direction. As with other illative forms, its exact suffix is determined by the noun’s stem and phonological rules of Finnish.