Daily Vocabulary(2018/03/27)

21381.red flag(危険）
His speech is slurring? That's a red flag. You should take him to the hospital immediately.
21382.insecure(不安）
Ever since I was kid, I've always been insecure about my weight.
21383.take out one's frustration on(不満をぶつける）
I'm sorry. I didn't mean to take out my frustration on you.
21384.blue-collar worker(肉体労働者）
Steve is a blue-collar worker. He works in construction.
21385.obsessed with(〜にすごくはまっている）
He's so obsessed with himself. He keeps looking at himself in the mirror.

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