The phrasal verb "bug out" is primarily used in informal contexts and is associated with two main usages. In one sense, it means to leave a place quickly and in a chaotic manner, often due to fear or emergency—historically linked to military jargon describing a quick retreat. In another sense, it means to react with surprise or be alarmed, frequently used when someone's eyes widen dramatically in response to shock or disbelief. This expression is prevalent in everyday casual conversations, particularly in North American English, and often carries a sense of urgency or surprise. Additionally, it can be used metaphorically to describe mental or emotional agitation. While not commonly used in formal writing or speech, it may appear in informal narratives or dialogues that aim to convey an authentic conversational tone.
B1
Intermediate
1. To leave a place suddenly, especially due to fear or panic.
When the storm hit, we had to bug out and find shelter.
The soldiers bugged out as soon as they heard the warning.
2. To become very upset or excited about something, often unnecessarily.
She bugged out when she saw the surprise party decorations.
Don't bug out over the test results, they're not that bad.
3. (slang) To have one's eyes open wide, often in shock or surprise.
His eyes bugged out when he saw the car accident.
Her eyes bugged out at the sight of the giant spider.