Questions & Answers about Dno je debelo.
Dno is a noun, and here it is the subject of the sentence.
Grammatically, it is:
- singular
- neuter
- in the nominative case (the basic dictionary form, used for the subject)
That matters because the adjective debelo has to agree with dno in gender and number.
Because dno is a neuter noun.
In Croatian, adjectives must agree with the noun they describe:
- debeo = masculine singular
- debela = feminine singular
- debelo = neuter singular
So:
- stol je debeo would be masculine
- knjiga je debela would be feminine
- dno je debelo is neuter
This is one of the most important agreement patterns in Croatian.