This is the 736th most frequent Serbian word.
остала
"Остала" means "remaining" or "left" in English.
The word 'остала' here means 'stayed' and is used as a verb in the past tense to indicate remaining in a place.
Она је остала код куће зато што је била болесна.
She stayed at home because she was sick.
Here, 'остала' serves as an adjective, modifying 'питања' (questions) to mean 'remaining' or 'left over'.
Остала питања можете поставити касније.
The remaining questions can be asked later.
In this sentence, 'остала' as a verb in the past tense reflects a state of becoming or continuing, in this case being silent.