will have been slackening

• 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 slacken.
  slacken

  verb (used with or without object)

  to make or become less active, vigorous, intense, etc.

Related Words

• abate
• diminish
• loosen
• mitigate
• relent
• retard
• sag
• soften
• subside
• weaken