This is the 13157th most frequent Swedish word.
tjallar
"Tjallar" means "to snitch" or "to inform on someone."
In this sentence, 'tjallar' means to betray or inform on someone, often with negative connotations.
Han tjallar på sina vänner.
He tattles on his friends.
Here, 'tjallar' means revealing information, often perceived as unwanted or inappropriate.
Om du tjallar till läraren, blir jag arg.
If you tattle to the teacher, I will be angry.
This sentence uses 'tjallar' negated to emphasize trustworthiness and loyalty.