will have been supplementing

• 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 supplement.
  supplement

  noun

  something added to complete a thing, supply a deficiency, or reinforce or extend a whole.

Related Words

• augment
• build up
• buttress
• complement
• enhance
• enrich
• fill out
• fortify
• improve
• reinforce
• strengthen
• subsidize