If you have dreamed of arguing with my brother: You may need to stand behind a certain idea or strengthen your opinion, There may be wrong steps or decisions that will be brought by excessive optimism or overconfidence. Arguing with my brother in a dream indicates that there is no harmonious brother-sister relationship in real life, that your feelings, thoughts and outlook on life are completely different from each other, and this situation causes arguments and fights in the household from time to time. We can say that it is beneficial for this person to be moderate.