To accost someone means to interrupt them with the intention of getting their attention or help with something. Therefore someone should be accosted when someone needs their attention or help.
An antonym for accost is ignore, avoid, and shun.
He accost me with excessive warmth
The man was astounded by how the teenager accosted him. Accost=Confront
I don't know why you continue to accost me.
Synonyms of Accost: call, welcome, greet, challenge, address Antonyms of Accost: ignore, scorn, avoid, shun
Sam didn't want to accost Melanie, but he needed to speak with her. Lobbyists would occasionally accost the new senator as he walked to his office.
yes
I will not accost him. It means to confront a person with force.
Address and Annoy
attack
Address and Annoy
to approach, especially with a greeting, question, or remark