bane

/beɪn/
noun
  1. A cause of great trouble, annoyance, or suffering.
    • The constant noise from the construction site became the bane of the neighborhood.
    • Mosquitoes are the bane of my summer evenings.
    • For many students, early morning classes are the bane of their existence.
  2. Something that destroys or ruins; a deadly poison (often used figuratively).
    • Lack of communication can be the bane of any relationship.
    • Greed was the bane of the once-thriving company.
    • In the old story, the hero sought a bane to defeat the dragon.
Antonyms
What does "bane" mean? | whatsthatwordmean | whatsthatwordmean