Breakdown of Nie podoba mi się byle jaki projekt.
ja
I
nie
no / not
projekt
project
podobać się
to appeal / to like (aesthetically, first impressions)
Questions & Answers about Nie podoba mi się byle jaki projekt.
Normally, negation changes the case to Genitive. Why is byle jaki projekt in the Nominative case here?
This is a common trap! Negation only changes an Accusative direct object into the Genitive. However, with the verb podobać się (to be pleasing to), the thing you like is actually the grammatical subject of the sentence. Subjects always stay in the Nominative case, even in negative sentences.
Does byle jaki just mean 'any' here, or is there a specific nuance?
While it literally stems from the prefix byle (indicating indifference), as an adjective byle jaki usually carries a negative connotation in Polish. It implies that something is 'mediocre', 'shoddy', or 'thrown together carelessly'. The speaker is saying they don't accept low-quality work.
Does the byle part of byle jaki change if I need a different case or gender?
No, the prefix byle is completely frozen. You only decline the second part (jaki), exactly as you would decline the standard adjective jaki. For instance, with a feminine noun in the Accusative case, you would use byle jaką.
How would this sentence change if I wanted to say 'projects' in the plural?
You would say Nie podobają mi się byle jakie projekty. The verb must match the plural subject, so podoba becomes podobają. Then, the noun and its modifier take the non-masculine-personal plural form: byle jakie projekty.