To turn the tables is to reverse a situation so you now have the advantage. She turned the tables completely.
It needs a losing position first, since you cannot turn the tables from in front. The phrase comes from board games where the board itself was turned round.
1phraseturn the tablesTo reverse a situation so you now have the advantage.
“One document was enough to turn the tables on the whole case.”
turn the tables is a phrase.
Practised in Idioms