assaulter

noun

Etymology: From assault + -er.

1. One who commits assault.

   “Earnest assaulters of current theories, or earnest apologists for them, should alike have conducted attack or defence, as it seems to us, upon some more concerted plan.”

   “"If you've been assaulted and battered," said the Mayor, "we shall have to arrest the assaulters and batterers, as well."”