forthwith
adverb
[ fɔːθˈwɪθ ]
• (especially in official use) immediately; without delay.
• "we undertake to pay forthwith the money required"
Similar:
immediately,
at once,
instantly,
directly,
right away,
straight away,
now,
this/that (very) minute,
this/that instant,
then and there,
there and then,
here and now,
in/like a flash,
instantaneously,
by return,
post-haste,
without delay,
without further/more ado,
without hesitation,
unhesitatingly,
quickly,
as quickly as possible,
fast,
speedily,
with all speed,
promptly,
as soon as possible,
ASAP,
expeditiously,
momentarily,
in short order,
tout de suite,
straight off,
toot sweet,
pronto,
double quick,
p.d.q. (pretty damn quick),
in double quick time,
at warp speed,
ekdam,
straightway,
instanter,
forthright,
Origin:
Middle English (in the sense ‘along with, at the same time’): partly from earlier forthwithal, partly representing forth with used alone without a following noun.