What Makes Up the Name: chill + relax
This is the one most likely to makes someone want to eat your face off. And we mean that in a bad way. There is no need to combine these two words. Please, never ever use this term. Thank you and this concludes the list of Complex list of 50 Portmanteaus.
Origin: Merriam-Webster (ARE YOU SERIOUS?) says first usage was in 1999.