Of what nature the wrongs are thou hast done him, I know not; but thy intercepter, full of despite, bloody as the hunter, attends thee at the orchard end: dismount thy tuck, be yare in thy preparation, for thy assailant is quick, skilful, and deadly.
There are no more uses of "assailant" in the play.
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fought off my assailant
The wise man always throws himself on the side of his assailants. It is more his interest than it is theirs to find his weak point.