HU

HU stands for "Heads up," which is another way to say "Watch out." It is typically used online, in emails, and in text messages as a warning.

The origins of "Heads up" date back to the 19th century, eventually becoming a popular way to notify people that something is about to happen. It is often used when playing sports to warn people to watch out for an errant football pass, basketball shot, or baseball throw.

While the "Heads up" saying has been around for centuries, the "HU" acronym did not become common until digital communication became more prevalent (1990s and 2000s). In text messages and online, the acronym is used as a quick way to warn somebody, and in email communication, it is often used to warn co-workers of a change in the business plan.

Someone who tells you to HU may want you to "hold up." When used this way, HU typically means "stop what you're doing." (And is not a plea to rob a bank or hold an object over your head.)

For example, if you tell your BFF that you plan to buy them a T Swift ticket, your BFF may respond with "HU, I think I'm gone that wknd. Lemme double-check." This means your friend wants you to wait before buying them a ticket.

When you're discussing delays and hindrances, HU probably stands for "hang-up." Most often, people use this abbreviation when asking why you haven't done something yet. For example, if your boss is wondering why your project is late, they may ask "What's the HU?"

In some instances, HU may instead stand for "hang up." This verb form of HU can be used to describe hanging up a telephone or other object, or delaying an event.