資料來源 : pyDict

確實地,無疑地,確信地

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Assuredly \As*sur"ed*ly\, adv.
   Certainly; indubitably. ``The siege assuredly I'll raise.''
   --Shak.

資料來源 : WordNet®

assuredly
     adv : without a doubt; "the grammar schools were assuredly not
           intended for the gentry alone"