1. Emotional reflection: This dream may reflect some unresolved emotions or regrets towards your father deep inside, and angry words may symbolize some disputes or misunderstandings with your father that you have not fully expressed or resolved in real life.
2. Subconscious processing: Dreams are a way for the brain to organize information and process emotions during rest. Dreaming of your deceased father speaking angrily may indicate that your subconscious is trying to resolve emotional entanglements related to your father, or re examining and interpreting a past experience.
3. Reminder and Inspiration: Such dreams may also serve as a reminder of the importance of communication, understanding, and reconciliation with loved ones. It may encourage you to face and deal with emotional legacy issues with your deceased father or other important figures in order to achieve inner peace and harmony.