Is there any difference between using in-built or built-in? Is one more correct than the other, or does it depend on the context, or ”house style”?
This oven comes with a built-in extractor fan.
This oven comes with an in-built extractor fan.
This is one of those ones where Google, whatever faults it might have, does tell you something significant:
"built-in extractor fan" 643,000 results "in-built extractor fan" 137 results
Subjectively, from the first ten results, it looks like the "in-built" hits are largely from the UK. I've never even heard of an "in-built extractor fan".
Just at a guess I would think that "in-built" would go with "ability", so I tried it on Google:
"built-in ability" 216,000 results "in-built ability" 75,500 results
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