Source : Webster's Revised Unabridged Dictionary (1913)

Handily \Hand"i*ly\, adv. [See {Handy}.]
   In a handy manner; skillfully; conveniently.

Source : WordNet®

handily
     adv 1: in a convenient manner; "the switch was conveniently
            located" [syn: {conveniently}] [ant: {inconveniently}]
     2: with no difficulty; "she beat him handily" [syn: {hands down}]