(adv.) In a shy or timid manner; not familiarly; with reserve.

calculating cannily canny careful carefully cautious cautiously charily chary circumspect circumspectly considerate daintily dainty deliberate delicate delicately discreet fastidious guarded guardedly heedful hesitant judicious leaving out nothing mindful nervous noncommittal on guard overlooking no possibility pawky politic prudent regardful safe shy shyly slow to act squeamish tentative tentatively thorough timid timidly timorous timorously unadventurous uncommunicative undaring unenterprising unprecipitate warily wary watchful