The idiom "flew the coop" means to escape or leave a place suddenly and without warning. It is often used to describe someone who has left their home or workplace without telling anyone or without permission.
The origin of this idiom comes from the idea of a bird escaping from its coop or cage by flying away. In the same way, a person who "flies the coop" is leaving a situation or place behind in a sudden and unexpected manner.
For example, if someone suddenly quits their job without giving notice, you could say that they "flew the coop." Or if a teenager runs away from home without telling their parents, you could also say that they "flew the coop."
Overall, "flew the coop" is a common slang expression that is used to describe someone who has left a situation or place suddenly and without warning.
• After saving enough money, Sarah finally flew the coop and moved to a bigger city to start her own business. (intermediate level)
• The CEO of the company flew the coop after being accused of embezzlement. (advanced level)
• Jack's parents were disappointed when he flew the coop and left home without any explanation. (upper-intermediate level)
• Last night, I saw my neighbor's cat fly the coop and escape from their house. (elementary level)
• I woke up this morning and my pet bird flew the coop. (beginner level)
• Despite the risks, the group of activists flew the coop and embarked on a dangerous mission to rescue endangered animals from a poacher's den. (proficient level)