I really dislike "inbuilt"

I found it in multiple dictionary references, but I can't help but feel this is a colloquialism that isn't correct. I've always read and used "built-in" as terminology, but I see it more and more in my job.

I let it go in an article today because I don't have a good argument against it, unlike "upgradation." That one I can't let go.

And I hate seeing it in news publications.