HODL is just a typo of the word “hold.” GameKyuubi – a member of the bitcointalk.com forum – misspelled the word while writing about holding his coins and not selling them. Instead, he wrote: ”I AM HODLING.“ People didn’t let the mistake slide. They started to write HODL in his post, and soon it became a thing. Later, HODL evolved from a typo into an acronym meaning Holding On for Dear Life. You can see the original post here: I AM HODLING.