Apple of discord
Meaning: subject of envy or quarrel, something that causes unhappiness or trouble.
Example: This question is an apple of discord in our family. What is the apple of discord here?
Выучи грамотный разговорный английский до уверенного владения всего за 9 месяцев по системе естественного усвоения иностранных языков. Жми!
Example: This question is an apple of discord in our family. What is the apple of discord here?