This is the 15830th most frequent German word.
ärgern
"Ärgern" means "to annoy" or "to irritate" in English.
Here, 'ärgern' is used in the sense of lightheartedly provoking someone playfully.
Ich ärgere meinen kleinen Bruder, weil er nicht aufräumen möchte.
I tease my little brother because he doesn't want to clean up.
In this instance, 'ärgern' describes feeling irritation caused by others' behavior.
Es ärgert mich, wenn Leute unhöflich sind.
It annoys me when people are rude.
Here, 'sich ärgern' means to get upset or annoyed, reflecting an internal emotional response.