Compounds of あだ

• あだ花
  (n) (1) non-fruit-bearing flower
  (2) something that is flashy with no content
• あだ事
  (n) trivial matter
• あだ名
  (n,vs) nickname
• あだ討ち
  (n) vengeance
  revenge
  retaliation
• ああだこうだ
  (exp) this, that and the other
  this and that