The Collaborative International Dictionary of English v.0.48:

Shily \Shi"ly\, adv.
   See Shyly.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Shyly \Shy"ly\, adv.
   In a shy or timid manner; not familiarly; with reserve.
   [Written also shily.]
   [1913 Webster]