Folyóba

Folyóba is a Hungarian directional form built from the noun folyó (river) plus the suffix -ba, indicating movement toward the interior of the river. The suffix -ba follows vowel harmony rules in Hungarian, so with a back vowel ending like -ó, the form becomes -ba (not -be). This form functions as a case-like marker showing the goal or endpoint of movement.

In use, folyóba marks the destination of a verb of motion or change of location. It describes going into the river rather than staying on its bank or at its edge. It is commonly found with verbs such as esik (to fall), ugrik (to jump), merül (to dive), or megy (to go), among others. The literal meaning is “into the river,” and it is not a standalone noun but a grammatical form attached to folyó.

Examples include: "A fiú a folyóba esett." (The boy fell into the river.) "A gyermek a folyóba ugrott." (The child jumped into the river.) "A halász a folyóba merült." (The fisherman dove into the river.) In contrast, forms like folyóban mean “in the river,” used for static location, whereas folyóba denotes movement toward the interior of the river.

Related topics include Hungarian vowel harmony and the broader system of directional suffixes -ba/-be, -ra/-re, and -hoz/-hez/-höz, which attach to nouns to express movement toward or onto various surfaces or directions.