will have been dumbfounding

• future perfect progressive

  future perfect progressive

  Used to describe a continuous action that will progress up until a designated point of completion in the future.

  of dumbfound.
  dumbfound

  verb (used with object)

  to make speechless with amazement; astonish.

Related Words

• amaze
• astonish
• bewilder
• boggle
• confound
• flabbergast
• nonplus
• puzzle
• startle
• stun