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to look out for number one
01
to not care about other people and do what one believes is best for oneself
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Idiom
InformalWhat is the origin of the idiom "look out for number one" and when to use it?
The idiom "look out for number one" advises a person to prioritize their own interests and well-being above all else. It originated in the mid-20th century and is often used in a somewhat self-centered or survivalist context. This expression is used to emphasize the importance of self-preservation and the idea that one should take care of their own needs and concerns first, especially in competitive or challenging situations.
Example
He is a self-interested liar, whose sole motive throughout his life has been looking after number one.
In a fiercely competitive job market, you often have to look out for number one to secure the best opportunities.
He decided to look out for number one and negotiate a better salary for himself.
