Webster's Revised Unabridged Dictionary · 1913

Therewith

Therewith , adverb

1.
With that or this.
I have learned in whatsoever state I am, therewith to be content. — Phil. iv. 11
2.
In addition; besides; moreover.
To speak of strength and therewith hardiness. — Chaucer
3.
At the same time; forthwith. [Obsolete] — Johnson