will have regretted

• future perfect

  future perfect

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

  of regret.
  regret

  verb (used with object)

  to feel sorrow or remorse for (an act, fault, disappointment, etc.).

Related Words

• anguish
• annoyance
• apology
• bitterness
• concern
• contrition
• disappointment
• discomfort
• dissatisfaction
• grief
• heartache
• heartbreak
• misgiving
• nostalgia
• qualm
• remorse
• repentance
• sorrow
• uneasiness
• worry