lowdown

1. Mark cheated all his friends; he is just a lowdown son of a bitch.
   马克欺骗了所有的朋友; 他是母狗养的卑劣的家伙。

low.down

n.Slang （名词）【俚语】
The whole truth:
内情，实情：
例句：
gave us the lowdown on what happened at the party.
告诉我们实情：那次聚会上发生了什么ô