HU

HU is an acronym that means "hook up", refers to two people getting together in a dating relationship. The people getting together may be just starting a relationship or may be getting physically intimate.

The term is only used in informal settings since it refers to personal matters. It is typically used between friends who are curious about each other's personal life.

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.

Refers to something that is causing a delay or making people wait; sometimes used to describe Internet lag.

May also refer to something being delayed; can also be used to show you are ending a conversation (i.e. hanging up the phone).