will have been startling

• 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 startle.
  startle

  verb (used with object)

  to disturb or agitate suddenly as by surprise or alarm.

Related Words

• agitate
• alarm
• amaze
• astonish
• astound
• awe
• scare
• shake up
• shock
• stagger
• stun
• terrify