Definition
When a decision or vote does not favor someone, it results contrary to their desired outcome.
对某人不利
The decision clearly went against her, as she lost the chance to present her proposal.
这个决定显然对她不利，因为她失去了展示提案的机会。
When the members voted, the outcome went against me.
当成员们投票时，结果对我不利。
His actions seemed deliberately intended to go against me and get me punished.
他的行为似乎是故意针对我，想让我受到惩罚。