English Idioms

Red Flag

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Red Flag - a sign of possible problem: a sign that something is going good

• I see many red flags at the school. I want to talk to the teacher about the situation.
• I was thinking about buy the car, but I saw some red flags, so I choose not to buy that car.
• I there are some red flags at work. I hope I do not loss my job.
• We need to move to a different house. This house has some red flags, and we think the owners will not fix the problems.
• The nurse saw some red flags, so she called the doctor.

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