PDQ
absolutely
after a while
all joking aside
anon
apace
at once
before long
betimes
bluffly
bluntly
broadly
brusquely
by and by
candidly
completely
dead
dead ahead
decisively
definitely
direct
down the alley
downrightly
due
due north
entirely
ere long
even
exactly
expeditiously
expressly
faithfully
flatly
forthright
forthwith
frankly
genuinely
honestly
immediately
in a beeline
in a moment
in a while
in all conscience
in all respects
in all seriousness
beckley
correctly
incorrectly
indirectly