1.
[syn: craftily, cunningly, foxily, knavishly, slyly, trickily, artfully]
The Collaborative International Dictionary of English v.0.48:
Slyly \Sly"ly\, adv.
In a sly manner; shrewdly; craftily.
[1913 Webster]
Honestly and slyly he it spent. --Chaucer.
[1913 Webster]
WordNet (r) 3.0 (2006):
slyly
adv 1: in an artful manner; "he craftily arranged to be there
when the decision was announced"; "had ever circumstances
conspired so cunningly?" [syn: craftily, cunningly,
foxily, knavishly, slyly, trickily, artfully]