Source : Webster's Revised Unabridged Dictionary (1913)

Guarded \Guard"ed\, a.
   Cautious; wary; circumspect; as, he was guarded in his
   expressions; framed or uttered with caution; as, his
   expressions were guarded. -- {Guard"edly}, adv. --
   {Guard"ed*ness}, n.

Source : WordNet®

guardedly
     adv : in a conservative manner; "we estimated the number of
           demonstrators conservatively at 200,000." [syn: {conservatively},
            {cautiously}]