Source : Webster's Revised Unabridged Dictionary (1913)

Pleasantly \Pleas"ant*ly\, adv.
   In a pleasant manner.

Source : WordNet®

pleasantly
     adv 1: in a cheerful manner; "`I'll do the dishes,' he said
            pleasantly" [syn: {cheerily}, {sunnily}]
     2: in an enjoyable manner; "we spent a pleasantly lazy
        afternoon" [syn: {agreeably}, {enjoyably}] [ant: {disagreeably},
         {unpleasantly}]