derhal
immediate. immediately. instantly. right away. now. in no time. in an instant. instantaneously. at a word. anon. bang off. right of the bat. forthwith. out of hand. instanter. at once. in a jiffy. pronto. therewith.

derhal
directly. forthwith. immediately. straightaway. at once. instantly. right away.

derhal
at once. immediately. as soon as. directly. forthwith. in continenti. in praesenti. instantly. momentarily. on the nail. promptly. pronto. soon. straightaway. thereupon. in one's track. whip and spur.