Ahh, I see. We can definitely consolidate your dropdown by using INDIRECT and VLOOKUP.

Somewhere on another tab store the translations. I named that sheet Reference.

A2: Kuř
A3: Vepř

B2: Kuřecí
B3: Vepřové

etc

Your validation formula:

=INDIRECT(VLOOKUP(B13,Reference!$A$2:$B$8,2,0)&"!$A$3:$A$52")