Adj-i stem + がる / Adj-na stem + がるto show signs of (third person emotion)
It converts adjectives of internal feeling (like 'kowai' or 'hoshii') into verbs that describe the observable behavior of someone else. It is essential when talking about a third person's emotions in Japanese.
Common mistakes
- Using it for the speaker's own feelings.
- Forgetting to use 'garu' when the subject is not 'I'.
- Confusing the particle change (e.g., 'mizu wo hoshigaru' vs 'mizu ga hoshii').