You use ~ to describe something that never changes.
It was his ~ custom to have one whisky before his supper.
= unchanging
ADJ: usu ADJ n
You use ~ to describe something that never changes.
It was his ~ custom to have one whisky before his supper.
= unchanging
ADJ: usu ADJ n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012