'Head off' is a phrasal verb that is commonly used in both informal and formal contexts, though it is more prevalent in informal speech. It has two primary meanings. First, it can mean to start a journey or to leave, as in "We need to head off early in the morning." This usage is casual and often used when talking about travel or simply leaving a location. Second, it can mean to intercept or prevent something, akin to "avert" or "stop," as in "The police managed to head off the protest before it turned violent." This particular usage is more neutral in tone and can fit both formal and informal contexts, especially when discussing preventative actions in various situations. The versatility of 'head off' in these contexts makes it a useful phrase across different settings.
B2
UpperIntermediate
1. To prevent someone from going somewhere by blocking their path or redirecting them.
The police managed to head off the protesters before they reached the embassy.
We need to head off any potential conflicts before they escalate.
2. To start a journey or to depart.
She decided to head off to the mountains for a weekend escape.