You use ~ to describe someone that used to be the type of person indicated, but no longer is. (FORMAL)
He fled to America with Phyllis Burton, an ~ friend of his wife’s.
= one-time
ADJ: ADJ n
You use ~ to describe someone that used to be the type of person indicated, but no longer is. (FORMAL)
He fled to America with Phyllis Burton, an ~ friend of his wife’s.
= one-time
ADJ: ADJ n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012