had been nullifying

• 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 nullify.
  nullify

  verb (used with object)

  to render or declare legally void or inoperative.

Related Words

• abolish
• abrogate
• annul
• invalidate
• negate
• offset
• quash
• repeal
• rescind
• restrict
• torpedo
• undo
• veto
• void
• wipe out