From The Collaborative International Dictionary of English v.0.48 [gcide]:
Speedily \Speed"i*ly\, adv.
In a speedy manner.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
speedily
adv 1: with rapid movements; "he works quickly" [syn: quickly,
rapidly, speedily, chop-chop, apace] [ant:
easy, slow, slowly, tardily]