1. 
[syn: coolly, nervelessly, nonchalantly]
The Collaborative International Dictionary of English v.0.48:
Coolly \Cool"ly\, a.
   Coolish; cool. [Obs.] --Spenser.
   [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Coolly \Cool"ly\, adv.
   In a cool manner; without heat or excessive cold; without
   passion or ardor; calmly; deliberately; with indifference;
   impudently.
   [1913 Webster]
WordNet (r) 3.0 (2006):
coolly
    adv 1: in a composed and unconcerned manner; "without more ado
           Barker borrowed a knife from his brigade Major and honed
           it on a carborundum stone as coolly as a butcher" [syn:
           coolly, nervelessly, nonchalantly]