will have startled

• future perfect

  future perfect

  Used to describe an action that will be fully completed or achieved by a specific point 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