"He seemed to insinuate himself into the room...Tonks was a dark planet whose presence could be deduced only by a deviation in the orbit of other bodies."
This is from Life Class by Pat Barker. It is about art students at the De Slade art school before and during the first World War. Tonks is a rather critical art professor who has just come into the student's life class to look at their work.
I just love the use of the word 'insinuate'. It captures Tonks' character so well.
You can read the first few pages of the book here.