On the __: furtively (3)
I believe the answer is:
sly
(Other definitions for sly that I've seen before include "Cunning, deceitful" , "Cunning, foxy" , "Cunning; surreptitious" , "Devious and furtive" , "Sneaky" .)
I believe the answer is:
sly
(Other definitions for sly that I've seen before include "Cunning, deceitful" , "Cunning, foxy" , "Cunning; surreptitious" , "Devious and furtive" , "Sneaky" .)