szerokiemu
Szerokiemu is the dative singular form of the Polish adjective szeroki, meaning wide or broad. It is not a standalone lexical item, but a grammatical form used when the noun it accompanies is in the dative case. In Polish, adjectives agree with the nouns they modify in gender, number, and case, so szerokiemu appears specifically with masculine personal and neuter nouns in the singular dative.
Morphology and usage notes: The feminine dative singular of szeroki is szerokiej, while the masculine and neuter
Etymology and linguistic role: The word derives from the root szer- meaning wide, with typical Polish adjective
See also: Polish grammar, adjective declension, Polish case system, dative case.