will have been complaining

• 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 complain.
  complain

  verb (used without object)

  to express dissatisfaction, pain, uneasiness, censure, resentment, or grief; find fault.

Related Words

• accuse
• criticize
• denounce
• disagree
• fret
• gripe
• grumble
• lament
• moan
• object
• oppose
• protest