I'm surprised you are not familiar with this term. I am aware that you complained to the moderators about my use of the term, but the term is used in 48 verses of the Bible. Here is one example.
For this Melchizedek, king of Salem, priest of the Most High God, who met Abraham returning from the slaughter of the kings and blessed him. (Hebrews 7:1)
I realize trinitarians don't like the term because it clearly indicates Jesus Christ is subject to his Father's authority rather than being co-equal.
You probably ought to complain to the moderators about the letter to the Hebrews using the term Most High God since you don't believe there is such a thing. Co-equal? Not even.
So go ahead and complain about my continued use of the term. Maybe I should complain about your complaining. If I am banned for using the term Most High then I shouldn't be here to begin with.
Why don't you post a list of all the biblical terms to which you object. At least that would give a more fair playing field. As it is I had no reason to believe you would be offended by the use of the term Most High. There, I've said it again, so complain again.
Someone should complain about frivolous complaints. It won't be me because I'm not a complainer nor a tattle tale. Maybe you should be the one to complain about your frivolous complaint since you've had practice complaining.