This is the 1054th most frequent Polish word.
ciekawych
The Polish word "ciekawych" means "of curious" or "of interesting" (genitive plural or accusative plural form).
In this sentence, 'ciekawych' is the genitive plural form of the adjective 'ciekawy' (meaning 'interesting') and modifies 'książek' (books), describing their nature.
Mam wiele ciekawych książek na półce.
I have many interesting books on the shelf.
Here, 'ciekawych' is the locative plural form of 'ciekawy,' used in the context of 'o' (about), matching 'pomysłach' (ideas) to describe their qualities.
Rozmawialiśmy o ciekawych pomysłach na projekt.
We talked about interesting ideas for the project.
In this sentence, 'ciekawych' is the accusative plural form of 'ciekawy,' agreeing with 'ludzi' (people), providing more information about who they were.