Source : Webster's Revised Unabridged Dictionary (1913)

Frigidly \Frig"id*ly\, adv.
   In a frigid manner; coldly; dully; without affection.

Source : WordNet®

frigidly
     adv : without warmth or enthusiasm; "`Come in if you have to,' he
           said frostily" [syn: {frostily}]