will have been using

• 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 use.
  use

  verb (used with object)

  to employ for some purpose; put into service; make use of.

Related Words

• adopt
• apply
• employ
• handle
• manage
• operate
• practice
• run
• spend
• utilize
• wield
• work