zainteresowanym

Zainteresowanym is the instrumental singular form of the Polish adjective zainteresowany, meaning “interested.” It denotes that the noun it modifies is in the instrumental case or appears after a preposition that governs instrumental, and it typically describes a masculine or neuter noun.

Grammatical use and examples

In ordinary speech and writing, zainteresowanym is used after prepositions such as z (with) to identify the person or party who is interested or with whom the action is connected. For example: Rozmawiałem z zainteresowanym inwestorem (I spoke with the interested investor). The form can also appear in noun phrases where the head noun is in instrumental: z zainteresowanym klientem, z zainteresowanym partnerem, etc. Note that when describing a feminine noun or in other cases, the form changes to the appropriate gender and case (e.g., zainteresowaną for feminine singular in instrumental).

Related forms and contrasts

The base adjective is zainteresowany (masculine nominative). Its feminine singular is zainteresowana, neuter singular is zainteresowane, and plural forms include zainteresowani (nominative masculine personal) and zainteresowaniami (instrumental plural). The corresponding genitive plural is zainteresowanych, used in phrases like dla zainteresowanych (for those who are interested). The word schließlich derives from the noun zainteresowanie (interest) plus typical adjectival endings.

Usage notes

zainteresowanym is most common in contexts where a specific interested party is described in instrumental construction or after a preposition requiring instrumental. It should not be used as a predicate adjective after być in the nominative form (that position uses zainteresowany). In formal or written Polish, it helps specify the role of a person or entity related to an interest or engagement in a topic, project, or discussion.