had been sharping

• past perfect progressive

  past perfect progressive

  Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.

  of sharp.
  sharp

  adjective

  having a thin cutting edge or a fine point; well-adapted for cutting or piercing.

Related Words

• acute
• bright
• brilliant
• fast
• intelligent
• nimble
• quick
• slick
• smart
• subtle