Definition

An ultra-casual abbreviation of "hello" for people who find removing three entire letters to be peak efficiency. Born from the texting era when every character saved was a victory, though now it's just a quirky affectation. Typically used ironically or by people who think being extremely informal is a personality trait.

Example Usage

Lo, what's up? Haven't seen you in forever.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=lo&defid=20283)