will have dumbfounded

• future perfect

  future perfect

  Used to describe an action that will be fully completed or achieved by a specific point 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