You can describe something as ~ when it lasts or takes longer than you would like it to.
The road to peace will be long and ~.
= protracted
ADJ
You can describe something as ~ when it lasts or takes longer than you would like it to.
The road to peace will be long and ~.
= protracted
ADJ
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012