This is the 12271st most frequent Polish word.
mikrofonu
The word "mikrofonu" is the genitive form of "mikrofon," meaning "microphone" in English.
The word 'mikrofonu' is in the genitive case, used here to denote possession (that of not being able to find the microphone).
Nie mogę znaleźć mikrofonu.
I cannot find the microphone.
In this context, 'mikrofonu' appears in the genitive case due to its connection to the verb 'potrzebuję,' which governs the genitive case for the object needed.
Potrzebuję mikrofonu do nagrań.
I need the microphone for recordings.
Here, 'mikrofonu' is also in the genitive case, used with the verb 'używam,' as this verb requires the genitive case for its object.