The term 'brought to nought' is a phrase that means something has been negated or UNDONE. This can be seen in the two crossword solutions for the term, which are 'negated' (7 letters) and 'UNDONE' (6 letters). Both of these words imply that something has been reversed or cancelled out. The phrase 'brought to nought' is often used to describe a situation where something has been rendered ineffective or unsuccessful.