"Out of control" 是一个英语短语，意为“失去控制”，“无法管理”或“无法约束”。这个表达通常用来描述一种情况、行为或者情感的状态，当它们变得不受约束或无法被正常管理时。它也可以用于形容人或事物的失控状态，无论是物理上的还是抽象的。

**用法示例：**

1. The fire was out of control, and the firefighters were struggling to contain it. (火势失控，消防员正在努力控制。)

2. My emotions were out of control after hearing the sad news. (听到那个悲伤的消息后，我的情绪失控了。)

3. The project is running out of control due to poor planning. (由于计划不当，项目正变得无法控制。)

4. The children were out of control when their parents left the room. (父母离开房间后，孩子们就失控了。)

**同义词辨析：**

1. **Unmanageable**: 与 "out of control" 类似，表示难以管理或处理。例如：The workload has become unmanageable, and I need assistance. (工作量变得难以应付，我需要帮助。)

2. **Beyond one's reach**: 意味着某事超出了一个人的能力范围，无法控制。例如：The situation is now beyond our reach; we have to call for professional help. (现在的情况我们无法处理，需要寻求专业帮助。)

3. **Rampant**: 常用来形容事物迅速蔓延或失控，如野火般无法遏制。例如：The inflation has become rampant, affecting people's livelihoods. (通货膨胀已经失控，影响了人们的生活。)

4. **Unrestrained**: 强调没有限制或约束的状态。例如：His behavior was completely unrestrained, causing chaos at the party. (他的行为完全不受约束，在聚会上造成了混乱。)

5. **In disarray**: 通常用于描述秩序或计划的混乱状态。例如：The office was in disarray after the sudden power outage. (突然停电后，办公室一片混乱。)