D defs.my
Entry 2 senses Webster, 1913

Forthwith

/fôr'-thwĭth'/ · Forth·with · IPA /fɔɹθˈwɪθ/
01 adv. Immediately; without delay; directly.
  1. 1.
    Immediately; without delay; directly.
    “Immediately there fell from his eyes as it had been scales; and he received sight forthwith.” — Acts ix. 18.
  2. 2.
    As soon as the thing required may be done by reasonable exertion confined to that object.(Law)