This is the 5603rd most frequent Swedish word.
gissa
"Guess."
Here, 'gissa' is used to mean 'guess' in the context of trying to infer something.
Jag kan inte gissa vad hon tänker på.
I cannot guess what she is thinking about.
In this case, 'gissa' is used in the context of making an assumption or judgment based on limited information.
Kan du gissa vilket nummer jag tänker på?
Can you guess which number I am thinking of?
Here, 'gissa' is employed in the context of attempting to figure out or deduce a specific fact.