It was a sort of vault on the ground floor at the back, with a despotic monster of a four-post bedstead in it, straddling over the whole place, putting one of his arbitrary legs into the fireplace and another into the doorway, and squeezing the wretched little washing-stand in quite a Divinely Righteous manner.
There are no more uses of "arbitrary" in the book.
Show samples from other sources
It was an arbitrary decision.
The speed limit seems to be arbitrary. I can’t imagine why it is so slow.