i Register
In some senses, chillax is marked as slang. Watch for register when choosing this word.
verb
To relax; to be laid back.
Chillax my friend. I agree with most of your sentiments about Tarantino and his use of violence as comedy.
To calm down.
“Chillax, familiar. We get it: you're a vampire-killer, with the stakes and the reflexes and all that-- great job.”
To behave.