przyszego
Przyszego is the genitive singular form of the Polish adjective przyszły, which means “future” or “coming.” It is used to indicate that a noun relates to the future and to agree with masculine or neuter nouns in the genitive case. In standard Polish, the full paradigm of przyszły shows that przyszłego is the masculine/neuter genitive singular form (for example, dla przyszłego roku, pojęcie przyszłego rozwoju).
Przyszego appears in phrases where the noun it modifies is in genitive or where a preposition requires
Przyszły, przyszła, przyszłe are the basic nominative singular forms for masculine, feminine, and neuter respectively. Przyszłego
The adjective przyszły and the noun przyszłość derive from the same root related to “future” or “coming.”