student asking question

Does “head up” mean to warn someone? What's the similar expression?

teacher

Native speaker’s answer

Rebecca

You are exactly right, the expression "heads up" means to warn someone of something. It can be used either to warn someone to get out of the way so they can avoid getting hit, or it can be used to make someone aware of something. Ex: Heads up! The tree is about to fall over! Ex: Just a heads up, there will be a quiz tomorrow. When "heads up" is used to warn someone of immediate danger, you can also use the expressions "watch out", "look out", or "duck". When it is used to warn someone about something upcoming that is not an immediate danger, you can use the expressions "fair warning", or "full disclosure".

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