If you are accosted in your dream, then you are releasing your fear of being harmed, hurt, or overpowered.
If you dream of accosting someone, then you are exposing and/or releasing aggression and your need to control in a way that has negative consequences.
[1]If you were accosted by a man, a false friend may try to impugn your honor.
However, you can expect money in the form of profits or a legacy if you were accosted by a woman, a beggar, or anyone known to you.
[2]