Source : Webster's Revised Unabridged Dictionary (1913)

Ambitiously \Am*bi"tious*ly\, adv.
   In an ambitious manner.

Source : WordNet®

ambitiously
     adv : in an ambitious and energetic manner; "she pursued her goals
           ambitiously" [syn: {determinedly}, {with ambition}]
           [ant: {unambitiously}]