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on the lookout for sb/sth
01
constantly paying attention to a person or thing to prevent a problem, danger, etc.
What is the origin of the idiom "on the lookout for someone or something" and when to use it?
The idiom "on the lookout for someone or something" is used to describe a state of watchfulness or alertness in the search for a specific person or thing. Its origins can be traced to English language use over the years, and it reflects the idea of actively seeking or being attentive to the presence or arrival of someone or something.
例
As a dedicated teacher, she's always on the lookout for signs of bullying among her students to address the issue promptly.
The detectives were on the lookout for any suspicious activity in the neighborhood.
The entrepreneur believed that all is fish that comes to the net, so he was always on the lookout for new business opportunities, even if they seemed unconventional.
Music executives at the record company scouted talent at local venues, always on the lookout for the next big hit.
The authorities were on the lookout for the fugitive debtor who had vanished without repaying his loans.
